5.3 turbo lag
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
ok update.
Compression was 160 on 2 cylinders. Cam checked out at 5* retarded installed dot to dot.
Installed my double roller with 4 degrees advanced and compression went up to 210psi on both cylinders.
Compression was 160 on 2 cylinders. Cam checked out at 5* retarded installed dot to dot.
Installed my double roller with 4 degrees advanced and compression went up to 210psi on both cylinders.
Curious to see if that helps with power.... I have a jfr 215/112* and didn't degree it. Be awesome to have power to be picked up
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
Well guys i dont know whats up. Finally started it up and noticed pretty loud ticking. Sounded like lifters. I figured they needed pumping up. Let it idle a lil while checking coolancoolant etc. After running for 20 mins or so its still ticking but not as bad. Maybe it will clear up with a good oil change and short drive around.
I can say this tho, its alot more snapier and torqier just moving around the yard.
I can say this tho, its alot more snapier and torqier just moving around the yard.
Are you sure you have oil pressure? What’s the pressure look like? Might need to re-prime the pump. Any chance you pinched the o-ring on the pump pickup?
Cold there? Run really thick oil or something? Might try some oil thinning additive. Had a few buddies cars do this with new lifters. Quick drive with 0w-30 oil and Rislone additive fixed it. Weird yours is acting up now though.
Cold there? Run really thick oil or something? Might try some oil thinning additive. Had a few buddies cars do this with new lifters. Quick drive with 0w-30 oil and Rislone additive fixed it. Weird yours is acting up now though.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
Yea wierd for sure. No its not cold. Pressure is back where it was around 60-80psi cold start. I installed a new o ring while i was at it.
Imma drain oil and change it may add some additive like u said to get them quiten down. I have around .80 on preload with 7.4s. What about ptv? I wouldn think so tho. Its a dished lm7 with ls9 gaskets and stock heads. Around.600 lift on cam. But i can turn it over fibe by hand no binning up. So its gotta be lifters.
Imma drain oil and change it may add some additive like u said to get them quiten down. I have around .80 on preload with 7.4s. What about ptv? I wouldn think so tho. Its a dished lm7 with ls9 gaskets and stock heads. Around.600 lift on cam. But i can turn it over fibe by hand no binning up. So its gotta be lifters.
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Verdad Gallardo As long as you are sure you degreed it right, no way it should be hitting the valves. Might try throwing some cheap light weight oil in with some Rislone. Then go on a gentle cruise.
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As you advanced the cam the intake valve will get closer to the piston, quick way to check is remove the plug slide some solder in intake valve side turn over by hand remove solder and measure. Just a quick check clearance could be fine.
dropping that much rpm on shift and having a hard time foot braking a burn out seems like the converter is too tight.
I'd imagine the 5.3 doesn't have the low end n/a torque the 5.3 has and whatever converter the 6.0 could flash up the 5.3 is having trouble with.
I tuned a 4.8 in my brothers truck with 0 torque management and even that thing could smoke the tires no problem.
I'd imagine the 5.3 doesn't have the low end n/a torque the 5.3 has and whatever converter the 6.0 could flash up the 5.3 is having trouble with.
I tuned a 4.8 in my brothers truck with 0 torque management and even that thing could smoke the tires no problem.
My suggestion would be to run a proper boost controller that can ensure the wastegate is closed to build boost. It's a night a day difference between that and your setup. It is exhuast pressure that spools the turbo, and your wastegate is most probably venting a little pressure while you are trying to spool.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
thanks for the replys guys. Yea converter is definitely to tight. It was speced the the original 6.0 setup. Im running stock 706s.
I checked ptv and exhaust side is good but the intake side is right at touching. So thats most likely the issue. I think im just gonna pull the cam all together and install it into the wifes tbss. And just run a stock 6.0 lq4 cam and springs on this 5.3 till i can get up the funds to get a triple12 cam and pull the converter and possibly sell it or install in the ss as well and run a ptc in the truck.
I checked ptv and exhaust side is good but the intake side is right at touching. So thats most likely the issue. I think im just gonna pull the cam all together and install it into the wifes tbss. And just run a stock 6.0 lq4 cam and springs on this 5.3 till i can get up the funds to get a triple12 cam and pull the converter and possibly sell it or install in the ss as well and run a ptc in the truck.
Wait, whats the lift on that 224/230 114 cam again? Assuming you degree'd it correctly and it's still retarded 1 degree from the cam card there is no way it should be hitting the valves. How did you find TDC?
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
Used the old screw driver trick. Should have checked it on the wheel tho. It was possible to have been off a hair for sure with doing that. Hmmm the hell with it at this point. Cam is not helping me being in the truck so its coming out.
Converter was probably the whole problem.
Converter was probably the whole problem.
You can't just degree it with the stock chain than advance it 4 degrees with an aftermarket set. Re degree the cam I'm sure you are way advanced now.