My 88 Yj has its original engine (2.5L) and all nothing has ever been
replaced. It gets about 8 mpg i had found that the header was loose and
cracked if i replace it how much mpg improvement can i expect if any.
And any sugjestions on what brand replacements are best?

 

So you are the person that asked about increasing the mileage eh?

You 'really' should have mentioned the Jeep was broken. 8 mpg is a
seriously dead engine.

If you use a light foot and stay under 70 mph, you should at least get
as good a mileage as my 86 CJ7 with the 258 6 cylinder engine. I get 23
US mpg.

After you repair the header, I recommend an oil and filter change, new
plugs, distributor cap, rotor, air filter, fuel filter and plug wires.
Then come back and ask the question again after checking the mileage.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepster wrote:
>
> My 88 Yj has its original engine (2.5L) and all nothing has ever been
> replaced. It gets about 8 mpg i had found that the header was loose and
> cracked if i replace it how much mpg improvement can i expect if any.
> And any sugjestions on what brand replacements are best?

 

So you are the person that asked about increasing the mileage eh?

You 'really' should have mentioned the Jeep was broken. 8 mpg is a
seriously dead engine.

If you use a light foot and stay under 70 mph, you should at least get
as good a mileage as my 86 CJ7 with the 258 6 cylinder engine. I get 23
US mpg.

After you repair the header, I recommend an oil and filter change, new
plugs, distributor cap, rotor, air filter, fuel filter and plug wires.
Then come back and ask the question again after checking the mileage.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepster wrote:
>
> My 88 Yj has its original engine (2.5L) and all nothing has ever been
> replaced. It gets about 8 mpg i had found that the header was loose and
> cracked if i replace it how much mpg improvement can i expect if any.
> And any sugjestions on what brand replacements are best?

 

So you are the person that asked about increasing the mileage eh?

You 'really' should have mentioned the Jeep was broken. 8 mpg is a
seriously dead engine.

If you use a light foot and stay under 70 mph, you should at least get
as good a mileage as my 86 CJ7 with the 258 6 cylinder engine. I get 23
US mpg.

After you repair the header, I recommend an oil and filter change, new
plugs, distributor cap, rotor, air filter, fuel filter and plug wires.
Then come back and ask the question again after checking the mileage.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepster wrote:
>
> My 88 Yj has its original engine (2.5L) and all nothing has ever been
> replaced. It gets about 8 mpg i had found that the header was loose and
> cracked if i replace it how much mpg improvement can i expect if any.
> And any sugjestions on what brand replacements are best?

 

So you are the person that asked about increasing the mileage eh?

You 'really' should have mentioned the Jeep was broken. 8 mpg is a
seriously dead engine.

If you use a light foot and stay under 70 mph, you should at least get
as good a mileage as my 86 CJ7 with the 258 6 cylinder engine. I get 23
US mpg.

After you repair the header, I recommend an oil and filter change, new
plugs, distributor cap, rotor, air filter, fuel filter and plug wires.
Then come back and ask the question again after checking the mileage.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepster wrote:
>
> My 88 Yj has its original engine (2.5L) and all nothing has ever been
> replaced. It gets about 8 mpg i had found that the header was loose and
> cracked if i replace it how much mpg improvement can i expect if any.
> And any sugjestions on what brand replacements are best?

 

Thanks for the tips ill probably end up getting most of that stuff
replaced shortly!

 

Thanks for the tips ill probably end up getting most of that stuff
replaced shortly!

 

Thanks for the tips ill probably end up getting most of that stuff
replaced shortly!

 

Thanks for the tips ill probably end up getting most of that stuff
replaced shortly!