Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: paulesc on November 18, 2010, 08:39:23 PM

Title: my 2.5 yj performance mods
Post by: paulesc on November 18, 2010, 08:39:23 PM
just thought i would put on the few things i have done and the differences they made.
I know it will never be a 4.0l . That is why i have tried not to spend to much money.

1,  31" tyres, this made the gearing high and i pretty much lost the use of 5th gear.

2,  my exhaust was rotton, so i bought a universal sports cat of ebay(£38) and universal straight through stainless silencer(£50).
plus adaptors. total about £110.
This made a real difference and i could use 5th gear a bit more.

3,  4.0l throttle body(£6) off ebay. I put a throttle helix on at the same time. Also matched it to the inlet manufold.
Only a very tiny slight notice in power.

4, my mate had a spare pipercross cone filter, so i thought i would try it.
This made a real difference. maybe allowing the bigger throttle body and helix to work properly.
I now have a 2.5 that drives ok with normal use of 5th gear.

anyone needs any info on these simply mods, i will try to help.

Title: Re: my 2.5 yj performance mods
Post by: Bishops Finger on November 18, 2010, 11:55:54 PM
Sounds good thinking...that and not fitting in an entire Pizza before testing

thats my front bumper plan fooked.....
Title: Re: my 2.5 yj performance mods
Post by: greggmo on November 19, 2010, 05:37:10 PM
Sounds good thinking...that and not fitting in an entire Pizza before testing

thats my front bumper plan fooked.....

translation please someone?
Title: Re: my 2.5 yj performance mods
Post by: scrw on November 19, 2010, 07:45:49 PM
Sounds good thinking...that and not fitting in an entire Pizza before testing

thats my front bumper plan fooked.....

translation please someone?

He slipped into yokel turnip talk there, believe it is something about keeping the weight of the vehicle down to increase performance?
Title: Re: my 2.5 yj performance mods
Post by: Dave69 on November 19, 2010, 09:46:34 PM
hobgoblin me thinks
Title: Re: my 2.5 yj performance mods
Post by: Bishops Finger on November 19, 2010, 10:20:06 PM
Arr..
Title: Re: my 2.5 yj performance mods
Post by: paulesc on February 12, 2011, 05:20:41 PM
I fitted an electrice fan and shroud today. I got it from a ford mondeo for a £10. The shroud is the just about the right width, but about 2" short I also took a thermo switch from a p100.
 Ended up paying more the the wire, breaker and relay than the major parts.

Performance wise, not much to be honest. Revs a little quicker.

the good news is, there is a lot less noise, the engine gets up to temp real quick and it runs smoother at motor way speeds.
Title: Re: my 2.5 yj performance mods
Post by: greggmo on February 13, 2011, 10:48:18 PM
dont try to get too much out of it or the gearbox will die quit quickly. trust me i know.
Title: Re: my 2.5 yj performance mods
Post by: dieselj20 on February 13, 2011, 10:56:28 PM
v8 :icon_super:
Title: Re: my 2.5 yj performance mods
Post by: Bulldog67 on February 13, 2011, 11:07:29 PM
was readin a JP mag today (old one but shud b on there website) and they turbocharged
Title: Re: my 2.5 yj performance mods
Post by: paulesc on February 14, 2011, 09:35:48 AM
i think im done with performance mods for now. i took it for a good run sunday(100 miles ish) and it run great. It does everything and more i would expect from an old 4x4x4banger :)

i do think of the weak gearbox and rear diff. new oil and hope for the best is the plan for now.