Headers for 83 CJ7
10-22-2004, 01:34 PM
#11
Guest
Posts: n/a
Re: Headers for 83 CJ7
Do you have to pass emissions and how good are you at tuning up a carb?
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 01:34 PM
#12
Guest
Posts: n/a
Re: Headers for 83 CJ7
Do you have to pass emissions and how good are you at tuning up a carb?
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 01:34 PM
#13
Guest
Posts: n/a
Re: Headers for 83 CJ7
Do you have to pass emissions and how good are you at tuning up a carb?
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
If you are good with a carb, the computer can be put to sleep which
gives you a sweet 25% 'seat of the pants' power boost. It will allow
the engine to rev up to 4500 now as well, so you get a mph increase in
each gear.
The engines can be tuned to pass emissions with really low numbers with
out the computer messing with things. (there are some 'mechanics' here
that always argue that because they never learned the carb skill, if it
has no computer, they are lost I think. ;-) But we have the papers to
prove it so...)
http://home.sprynet.com/~dale02/ignmods.htm
You then can change the carb and add headers and a hot coil like the
Accel Super coil and that 258 will rock.
I am still just running the stock carb and exhaust manifold with a 2"
straight pipe back to a Dynomax super turbo muffler with the hot Accel
coil in her. I am not required to have a 'cat' on my 'utility' vehicle.
I get 11L/100 km or 23 mpg running 91 octane and it will pull fast in
second up to 50 mph at 4400 rpm, 80+ mph in 3rd, bury the spedo in 4th
and no freaking way do I want to find out how fast 5th goes. LOL!
It will spin tires starting off too easy and will climb sand pit or
ravine walls pulling nice at 400 or so rpm without a stumble.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 02:09 PM
#14
Guest
Posts: n/a
Re: Headers for 83 CJ7
Hi George,
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 02:09 PM
#15
Guest
Posts: n/a
Re: Headers for 83 CJ7
Hi George,
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 02:09 PM
#16
Guest
Posts: n/a
Re: Headers for 83 CJ7
Hi George,
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
Buy a book on how to build performance. It all works together,
headers are just one part of the puzzle, of making your air pump breath
better, others are are bigger cubic feet per minute carburetor, and
longer duration cam, and higher compression ratios:
http://www.----------.com/ILoveMyHooker.jpg
http://www.----------.com/jeephooker.jpg Of course, a stock Chevy bolts
in three hundred and fifty horsepower.
God Bless America, ßill O|||||||O
mailto:--------------------
jcl64213 wrote:
>
> I have a question reguarding headers for my jeep. I have an 83 CJ7
> with 258 engine. So far all I have done is put in a K&N air filter in
> it. I would like to increase the horse power and was thinking of
> adding some headers. i was told headers will not make much of a
> diffrece. Is this true and does anyone have a better suggestion on
> how to add some power to my jeep. Thanks for any help that comes my
> way!!!
>
> George
10-22-2004, 03:32 PM
#17
Guest
Posts: n/a
Re: Headers for 83 CJ7
William Oliveri did pass the time by typing:
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
10-22-2004, 03:32 PM
#18
Guest
Posts: n/a
Re: Headers for 83 CJ7
William Oliveri did pass the time by typing:
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
10-22-2004, 03:32 PM
#19
Guest
Posts: n/a
Re: Headers for 83 CJ7
William Oliveri did pass the time by typing:
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
> Doug,
> How does an electric fan free up ponies? Does it cause a drag/resistance
> on the system?
Basically it transfers load from the engines belt system to the battery system
so rather than having to spin a fan all the time your engine can send more power
to the wheels. An added benefit is you can turn the electric fan off when fording
streams. Get too deep and a belt driven fan can hit water and be forced into
the radiator. (of course that is quite deep)
Even with a mechanical clutch the fan is still taking power. An electric fan
doesn't run if the cooling system doesn't need it.
--
DougW
10-22-2004, 04:44 PM
#20
Guest
Posts: n/a
Re: Headers for 83 CJ7
It isn't all 'free' HP....
The extra load on the alternator does eat a few HP also. So you trade
off alternator and battery life for the fan.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
DougW wrote:
>
> William Oliveri did pass the time by typing:
> > Doug,
> > How does an electric fan free up ponies? Does it cause a drag/resistance
> > on the system?
>
> Basically it transfers load from the engines belt system to the battery system
> so rather than having to spin a fan all the time your engine can send more power
> to the wheels. An added benefit is you can turn the electric fan off when fording
> streams. Get too deep and a belt driven fan can hit water and be forced into
> the radiator. (of course that is quite deep)
>
> Even with a mechanical clutch the fan is still taking power. An electric fan
> doesn't run if the cooling system doesn't need it.
>
> --
> DougW
The extra load on the alternator does eat a few HP also. So you trade
off alternator and battery life for the fan.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
DougW wrote:
>
> William Oliveri did pass the time by typing:
> > Doug,
> > How does an electric fan free up ponies? Does it cause a drag/resistance
> > on the system?
>
> Basically it transfers load from the engines belt system to the battery system
> so rather than having to spin a fan all the time your engine can send more power
> to the wheels. An added benefit is you can turn the electric fan off when fording
> streams. Get too deep and a belt driven fan can hit water and be forced into
> the radiator. (of course that is quite deep)
>
> Even with a mechanical clutch the fan is still taking power. An electric fan
> doesn't run if the cooling system doesn't need it.
>
> --
> DougW