Well that’s a good question, still not really sure.
The noise had almost went away completely but as of recent has become more noticeable again at cold start up. She is running great and making full boost.
My goal is to bring up it to DDM over the winter for a tear down. My guess based on conversations with Dave it’s Something with the chain tensioner or VVT although I replaced both VVT actuators. For now im running the hell out of it and having fun.
Posts by Pascal
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You need to put some heavy oil, engine oil will work. Set it up so once it starts keep pushing initial it's all the way on. If you stop half way you done.
This is a clampless barb, the barbs are larger in diameter than standard fuel/water fittings.
Put the fitting against something solid and push on hose, I use the side of my work bench or vise.
Aeroquip has an assemblies lube for this and it's a thick oil like STP. Use the silicon spray for the large silicone hoses if needed. I was able to put them together without any lube. -
I am with @kenny_h on the rain. I have had my SS swap ends at 35mph and my foot OFF of the gas pedal...
You all can't say I didn't warn you. I know there are 100 stories about how someone drove in a pouring rain and everything was fine. But there are 20 stories where the SS has decided to go on a path of its own. Sometimes it results in plowing up a field or hitting a guard rail.
Please drop the speed down to 30 or so and find something else to do if you get caught in the rain....
And remember if you hydroplane you are at fault, ticketed for losing control and open for lawsuits.
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That's a good thought being I changed to the Welter 2.5, but i have not had any exhaust smell issues so I don't think it's stupid rich, if it was stupid rich it would be a LS7 motor in there. I think I know a place close by to get a couple VVT valves to test but I will have to hear why I need to replace her with a Civic motor and paint my toenails before posting pic of my feet.
Checked with @StickerDick to see if he had any old blowed up Ecotech's to use for parts testing and he went full Honda and moved anything with a bowtie out of his garage. @funinthesun said he will let me use his VVT solnoids to test that and if not we gonna tear the top off and relook at timing chain and guides.
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That's a good thought being I changed to the Welter 2.5, but i have not had any exhaust smell issues so I don't think it's stupid rich, if it was stupid rich it would be a LS7 motor in there. I think I know a place close by to get a couple VVT valves to test but I will have to hear why I need to replace her with a Civic motor and paint my toenails before posting pic of my feet.
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Most of the miles were on the Blue Ridge Parkway, I pushed hard on a few twisty roads but always let her cool down afterward.
This is a dam puzzle and i have a bad feeling it's going to have a expensive conclusion.
I change my own oil, the oil I dumped was Rotella 5/30 Synthetic. -
Update, even more confused.
I pulled the VVT Solnoids and they were pretty clean, small amount of metal on each. Cleaned them and reinstalled.
The noise came back, now for the strange saga.
When I started her up after cleaning valves the engine was nice and quiet and purring like I kitten, I was having thoughts of hugging and high five'n DDM Dave and then i hit the throttle and noise started again getting louder with each rev. Not sure what that means or if it means anything. After that disappointment I drained the Rotella and topped off with new Mobil 1. The old oil had about 300 miles on it seems really dirty and the magnet drain plug has a greasy graffite like coating on it. Next step is to dig back into timing chain. -
Thanks Dave,
The noise got worse with Rotella "But" big butt I also changes my exhaust at the same time to Welter rear exit from the Hahn side and of coasre any engine noise would sound loader. The timing chain and guides look good from the top but will need to remove guides and check it deeper. I will pull those solonoids first and check them. That would be a simple and cheap fix !!!!!! -
Thanks for your responses, stethoscope is a great idea will get one today. We did do the old long screwdriver trick and the noise seemed to be coming from front of engine, that's why we pulled serpentine belt and tested that. What does removing the oil fill cap do?
I will run again at 2500-3000 and see if noise is there. If it was a connecting rod would tempature change the sound?
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I've had what I guessed was a valve train noise at idle,cold and it went away as engine warmed. Now the noise is getting worse. I have a low mileage Hahn setup with 7 psi. With the help of @funinthesun we pulled valve/cam cover and cams,rockers,springs and timing chain look good and tight, we pulled off the alternator drive belt
to test bearing on assecories and noise still there.
With some advise from DDM of a possibility of bent rod I did a compression test and 160/165 across all 4 pistons seems all is good there. Tested oil pressure at Turbo oil inlet and 55/60 psi steady.
The engine pulls hard and seems to run great, the rattle,marble noise goes almost complete away when she warms up. The noise comes in load once I lift off gas and it's ideling down. I did recently change oil to Rotella and plan on changing back to Mobil 1 this week and strain oil to look for metal. After my crash last summer I was having and issue shifting from Thrid to Forth when under pressure by somebody who thought they were faster and a bent shifter hold down cover and I missed I few shifts pegging the rev limiter.
Any advise would be aperciated. -
When I rev the engine in garage in nutual, it's good climbing up lift off gas and that lil rev hang starts and it rattles down to idle and then normal again.
Warm or Cold -
Hahn stage 2 with 7 psi springs. Welter 2.5 exhaust
Plus I now have what sounds like Marbles in my Valve Train. @funinthesun is coming to look at her today, fingers crossed. -
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Let us know your results.
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Well if it was my cat? IMG_0317.JPG
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Ok, yes I thick head also.
So sorry that should have been a thumbs up. -
I have that system now and do like the sound, Bill had talked about a new exhaust that would run down the side like a 70's Vette. I still have ocasional exhaust issues and was curious if Bill had anything in the works yet.
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Yes big thumbs, feet and more!!!!
I also have the same trailer and it gets 2 thumbs up.