Jeep 4.0 timing

Tuning concepts, methods, tips etc.

Moderators: jsmcortina, muythaibxr

Post Reply
WVaughan
MS/Extra Newbie
Posts: 3
Joined: Mon Jun 05, 2017 12:28 pm
Location: Brandon Ms

Jeep 4.0 timing

Post by WVaughan »

I have a jeep 4.0 boosted with hx35 running a microsquirt. I am running 31lb injectors and ls truck coils in wasted spark with a 36-1 wheel and vr sensor for crank trigger. 8 pounds of boost. I have it running pretty well drivability is great. Only problem is not pulling enough timing under boost. Is there anyone with a boosted 4.0 that would share their timing tables? Just to get some ideas I know each individual engine requires fine tuning.

Thanks
W Vaughan
turbo conversion
Super MS/Extra'er
Posts: 1281
Joined: Thu Aug 19, 2010 6:22 pm
Location: White House, TN USA

Re: Jeep 4.0 timing

Post by turbo conversion »

:msq:

David
1976 Datsun 280Z L28ET Garrett GT35R T3-T04E stage3 50 trim 63 A/R housing custom grind cam 2000-6000 rpm 440cc injectors intercooled 18 lbs. boost
3" exhaust turbo back LC-1 o2 sensor Hallman manual boost controller EDIS 6 ignition batch fire 60mm throttle body 5 spd T5 borg warner 3.54 lsd
WVaughan
MS/Extra Newbie
Posts: 3
Joined: Mon Jun 05, 2017 12:28 pm
Location: Brandon Ms

Re: Jeep 4.0 timing

Post by WVaughan »

Current tune and the last data log i believe. I made some adjustments due to my tables not being set up for boost. Havent tried the adjusted tune yet.
turbo conversion
Super MS/Extra'er
Posts: 1281
Joined: Thu Aug 19, 2010 6:22 pm
Location: White House, TN USA

Re: Jeep 4.0 timing

Post by turbo conversion »

What is the static compression?

David
1976 Datsun 280Z L28ET Garrett GT35R T3-T04E stage3 50 trim 63 A/R housing custom grind cam 2000-6000 rpm 440cc injectors intercooled 18 lbs. boost
3" exhaust turbo back LC-1 o2 sensor Hallman manual boost controller EDIS 6 ignition batch fire 60mm throttle body 5 spd T5 borg warner 3.54 lsd
WVaughan
MS/Extra Newbie
Posts: 3
Joined: Mon Jun 05, 2017 12:28 pm
Location: Brandon Ms

Re: Jeep 4.0 timing

Post by WVaughan »

Best I can find is 8.8:1.
Post Reply