1994-1995 3100 1.6 ratio stamped rockers(pictures & info)

[TGed]

I could get you a good used set pending your location.  PM me if you're serious.

[killinprixs]

i still have to install these on my 3.1 car... been sitting around for ever!

[RICHTGP]

Hey All! Just recently got the upgrades done to the TGP.  I put in a Comp Cams H260 cam, new lifters, timing chain and gears. Also put in 1:6 steel rockers, LS1 valve springs, and 22# injectors. Also put in a 180 degree thermostat. However, car runs horrible. It ran better with a skip on #5 cylinder and the cam lobes worn down. Have not had a chip made for it yet as I am not sure if there is a mechanical problem. Car seems to idle slightly rougher than before but actually sounds pretty good with a little more thump coming from the cam. When you accelerate from a stop the car seems to have half the power it had before and when you floor it it starts bucking and it sounds like it is backfiring through the turbo. Rapid bucking and misfiring and no power! Is it possible that with the 1:6 rockers that new rocker studs are needed to enable valve adjustment or do you just torque the valves down till they bottom out as before? I have read posts on this before and all seem to say you torque the rocker arms down as if they were the original 1:5's. If it doesnt matter which rocker arm you have in terms of rocker torque/adjustment, if you change the cam to a bigger cam, would this require manual valve adjustment?  Also, car shows check fuel on the DIC. Checked fuel pressure and it was good. Please help as I am ready to set it on fire and be done with it!

[flybynite]

Sounds like the valves are not closing all the way.. Just a guess

[killinprixs]

i would first do a compression test make sure all the cylinders are good.  check for codes via paperclip method.  Make sure the plugs are on in right order  146325.  That should get you on the right track.

[RICHTGP]

Checked the plugs and wires.They are in the right order and good. I am thinking valve issue also. When I was installing the valvesprings, the cylinders held pressure as I used compressed air to remove the valve keepers without removing the heads. However with the cam and the 1:6 rockers, maybe the valves are'nt closing all the way under load.  I wonder if the valves can be manually adjusted using the current rocker studs and if it is even required to manually adjust them. Most people on the forums seem to have installed them and it was a turnkey modification. Thanks for your input.

[NTRCOOL]

Are we limited to just the 94-95 3100 rockers? I have had a set of roller rockers from a 2000ish 3400sfi, will those work or will that involve a lot of work? I'll try to get pics up of them soon

[mfewtrail]

Those rocker arms will only work w/ the later model heads. There are aftermarket "roller tip" rockers available that will work with the stock heads though. Check out the 60degreeV6 store and forum to find info on those...