can anyone help?

[paulp]

Can you help with this problem?

Here is a little history, I had the engine rebuilt last fall and it hasn't run right sense. During the rebuild I had a lot of up grades. Here is a list..machine shop did the short block work and assembly, stock 4.3 .030 , eagle rods CRS570063D, pistons TRW-L2441F30, cam 09-412-8, oil pump M-55HV , double roller timing, KB under drive pulleys,machine shop assembled, balanced and set to cam spec's,heads L-35, 2.02 intake and 1.60 exhaust extreme duty, RPM performance spring kit (single spring), machine valve and spring pockets for new valves and springs,I did porting, and gasket matching work myself,
machine shop did head assembly, lifters comp cam roller (high energy from RPM)
push rods stock length (comp cams), rockers 1.6 full roller (comp cams), ARP studs for 1.60 rockers
components (new), knock sensor, idle air motor, TPS, map 3 bar, main shaft and pick up coil, throttle body 52mm, and air foil, balancer, boost control solenoid, ATR super pump, and adj. regulator, stock injectors, Led Ultimate chip for stock injectors, CR42TS plugs
wires, conrad cap , Caspers knock gage, 160 thermostat, 20G turbo

problem 1 - I can't get the lifters quite sounds like solids not much oil out of push rod but with good gage reads 65 at idle at the turbo hose and oil gage in truck at 3/4. Tried another new set of lifters and 1.5 rockers from comp cams still noisy.

problem 2- The truck seems to run with a mind of its own. With the truck in gear its idles very low and sometimes stalls unless I keep my foot on the throttle, idle also hunts. At 55 or 60 light throttle feels like I'm against a strong head wind and if I give it throttle sometimes it pops in the intake, at slight throttle idle or 55mph knock light flashes ( ultimate chip ) like crazy give it quarter throttle or more and the light stops flashing.
The scan tool and caspers knock gage don't show any knock?
Looking at what I put in the truck could the combination cause my problem? (Like under drive pulleys)
After talking to Todd from ultimate chip he said his the chip I bought from him won't work, and he doesn't make one for my set up. Can you burn one for my set up? would it work in the ultimate set up? How do I get a hold of Phil Long?
I would appreciate any help or advice.

Thanks Paul
GN 11.56 @ 114_________________

 

[Don W.]

Re: can anyone help?

My :2cents: on the lifter issue is they are not preloaded correctly:

For a stock engine bring the engine up to TDC #1 by watching the valves of NUMBER 4 cyl. Number 4 valves will be moving, number 1 won't. At this time adjust the following:

Exhaust valves cyl 1,5,6
Intake valves cyl 1,2,3

Turn the engine one full revolution and adjust the following:

Exhaust 2,3,4
Intake 4,5,6

The correct preload after -0- lash is ONE full turn. This centers the hyd lifter in its travel.

Personally I prefer a slightly different method but it requires two full turns so this is easier.

Tidbit: If you want to know why you're watching number 4 let me know. The answer works on any engine regardless of configuration or number of cyls.

Shurley someone triple checked the cam timing before the cover was installed. Also is ign timing set with the brown wire disconnected?

Open questions:
Can stock inj handle this build?
Are hyd "race" cam lifters preloaded the same way?

Just my :2cents:

 

[paulp]

Re: can anyone help?

Thanks for the reply,
Here is what I have done so far, adj lifters cold, hot and running (cut out valve cover) each time 1/4, 1/2 and 3/4 turns no luck. Stock car racer said try turning them down running till the engine starts to miss and back them off 1 turn still no luck. Talked to the guys at RPM and he said might be a bad set of lifters from Comp Cams (they had some bad ones out there a few years ago) sent them back and they sent me a new set still no luck. Replaced the new 1.6 full roller rockers and went back to 1.5 still no luck, the valve train geometry of the valve train was good with both rockers. The only odd thing is there is very little oil comming to the rocker. I read the oil pressure at the turbo line and it is 65 at idle with a good gage.
Thanks Paul

 

[Monesq]

Re: can anyone help?

I would post this in the engine tech area. You might get morre responses. I wish I could help, I use a mechanic as I do not have thr time or knowledge to deal with these machines.