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Discussion Starter · #1 ·
Yestersay I did the washer shim to my pump according to the post in the newbies section. wow did it make a huge difference but something is not right, it is very sensitive now if i try and take off normal it wants to just burn the tires off. when you get to about 2900-3100 range it starts to miss like the valves are floating, or mabey i running out of fuel or mabey my timing is to retarded. the washers are .060 thick and the stud protrusion is .050 on both sides so it is set up right i think. the only other thing i can think of is i do not have a return sping on the pedal so it is very touchy anyways; mabey just a return spring would help so the pedal is not so mushy. any ideas guys?
for now i,m going to back it off. thanks carson:shrug: :shrug:
 

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I am gonna try this in the spring.....I was gonna buy a kit but if I can do it for free or next to nothing I am all for that. Get a return spring on there ASAP. Mine broke and I just got a pack of universal return springs from that HELP at the local auto parts store and put them on there.....been there for 4 years now with no issues.
 

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Discussion Starter · #3 ·
was your pedal really touchy without the return? i spose it wasnt to bad with an auto. my pedal moves so easy that if your not careful the truck will bunny hop like mad
 

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Any time you mod the gov springs for more RPM's, the pedal gets more touchy. As for the miss, that's just what some do when they govern out. Either that or your short changing fuel somewhere else in the system.
 

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Discussion Starter · #5 ·
i put a return spring on the pedal last night, made it alot more managable
to drive. as to the miss other than a possible fuel shortage would bumping my timing up to 18 degrees help? would that also help with egt's before it would only get to 1150 now it will spank 1400 ( not good)
 

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Unless you plan on getting headgaskets, don't go over 16* on the timing. I'm not sure if it will help the missing or egt's though. A bigger turbo or a larger exhaust housing for the stock turbo will definitely take care of the egt problem.
 

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Discussion Starter · #7 ·
heres a stupid question, Isnt the exhaust housing bigger on a gen 1 turbo then a gen two? would the housing or the turbo work on my gen 2. Like i said probaly a STUPID Queston:dunce:
 

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Early first gens came with a 21cm housing, later ones a 18.5, and the last ones had a 12 like the second gens (disregarding some later 24v automatics)

The housing and turbos are similar enough to interchange
 

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I wouldn't throw a 1st gen turbo on there. Right now, I honestly don't think you have enough fuel to warrant a new turbo. I would bump your timing up to about 15* that should do alright with your set up. And possibly do some AFC mods like switching the washers or grinding the arm to get a little more rack travel out of it.

On my friends 96 auto, we did some similar pump mods to yours, a 3K gsk, and marine 370s and he was smoking a lot and pegging 1600* no problem. His timing had slipped a bit, and we bumped it up to 15* and that helped a lot. Cleared up quite a bit of smoke and brought him back to about 1300*.
Sean
 
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