Torspd: NEVR
- Thread starter Torspd
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Still need to pull the crank. Cross check journal to bearing clearances so the machine shop and I know how much tolerance we have to work with. Get it polished or machined, then put it back together with new rods. Machining wise, not much. Assembly wise, a lot. Nothing I am not used to though.
Just have had to take a break due to other priorities right now.
I did go by Kozmic Motorsports and have them attempt to connect to the ProEFI. To increase much injector profile. Was finally able to connect because they received one necessary file, but waiting on one more.
Then I can at least run 5 - 8 psi with the old turbo setup, on this engine, while I wait for the other to be finished. As well as finish up some punch list stuff on that kit.
Just have had to take a break due to other priorities right now.
I did go by Kozmic Motorsports and have them attempt to connect to the ProEFI. To increase much injector profile. Was finally able to connect because they received one necessary file, but waiting on one more.
Then I can at least run 5 - 8 psi with the old turbo setup, on this engine, while I wait for the other to be finished. As well as finish up some punch list stuff on that kit.
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Finally took some time to pull the heads off of the engine which I purchased from DoubllD. Dan, respectfully, we see why you had problems. Even the problems which you overcame, still left more to deal with, which would have sooner or later revealed themselves.
I'll start with the pistons first, although that was the second issue we found.
It isn't very much, but they protrude above the deck. More than likely due to the machining of the deck. That fact alone, if not accounted for by increasing the thickness of the head gasket, would have raised the compression ratio from the 9.5:1 that those pistons were machined to be, to something higher. Timing could have then been too high, if it was thought that the compression was one ratio, but actually another.
Then, comes the next issue.
Whoever machined the decks, did a pitiful job. Painfully. It is no wonder you had head gasket issues. I only found one spot where I could feel no difference between the deck of the block and the edge of the sleeves, where they meet. Everywhere else, the sleeves were on a higher plane than the block. Thus there is a sealing issue that could not be avoided. I don't know if it was APR or another machine shop who did that, but any Joe could have felt that and known how bad a job was done by the machinist.
Then, there was either something going on with the tune, or a combination of trying to tune with a possible head gasket issue. As the driver side piston crowns are clearly darker than the passenger side. Let it be noted that the driver side deck had a lot worse machining than the passenger deck.
Still have further to check into the engine, but there is a good sign. The heads are in good shape. This engine will have the decks re-machined, likely one head which has a couple of tiny marks on it, and if all else is right, be back together stronger and correctly.
I'll start with the pistons first, although that was the second issue we found.
It isn't very much, but they protrude above the deck. More than likely due to the machining of the deck. That fact alone, if not accounted for by increasing the thickness of the head gasket, would have raised the compression ratio from the 9.5:1 that those pistons were machined to be, to something higher. Timing could have then been too high, if it was thought that the compression was one ratio, but actually another.
Then, comes the next issue.
Whoever machined the decks, did a pitiful job. Painfully. It is no wonder you had head gasket issues. I only found one spot where I could feel no difference between the deck of the block and the edge of the sleeves, where they meet. Everywhere else, the sleeves were on a higher plane than the block. Thus there is a sealing issue that could not be avoided. I don't know if it was APR or another machine shop who did that, but any Joe could have felt that and known how bad a job was done by the machinist.
Then, there was either something going on with the tune, or a combination of trying to tune with a possible head gasket issue. As the driver side piston crowns are clearly darker than the passenger side. Let it be noted that the driver side deck had a lot worse machining than the passenger deck.
Still have further to check into the engine, but there is a good sign. The heads are in good shape. This engine will have the decks re-machined, likely one head which has a couple of tiny marks on it, and if all else is right, be back together stronger and correctly.
Gadget
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I was standing next to the truck when it blew a head gasket one of the times.
Except for that oil galley plug coming loose and dumping all the oil pressure, the impression I have gotten is that all of the problems seem to be a result of detonation. Blew through the O-Ringed head gasket, then another head gasket, then another, and one time he reported that the detonation was so bad it crushed the rod bearings.
No idea what is causing it, high compression, tuning, EMS, or what, but get any engine detonating enough and something is going to give out.
G
Except for that oil galley plug coming loose and dumping all the oil pressure, the impression I have gotten is that all of the problems seem to be a result of detonation. Blew through the O-Ringed head gasket, then another head gasket, then another, and one time he reported that the detonation was so bad it crushed the rod bearings.
No idea what is causing it, high compression, tuning, EMS, or what, but get any engine detonating enough and something is going to give out.
G
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Tuning with too much timing is a possibility. I cannot say for certain. Only Dan would know if his tuner was being to aggressive with it. Either way, couple that with the uneven decks, and pistons slightly above deck, and it is simply a matter of time. Even if the tune was safe timing and fuel wise, what the theoretical build limit was, would have been drastically lessened as soon as boost pressures were turned up. Dan put a lot of heart and effort into making it right, and I sympathize for him. Sabotaged by poor craftsmanship. Orrrrrr, someone wanted to see this happen to you, Gadget. It's a conspiracy! O_O. Lol.
Doublld
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sorry ive been mia guys just changing jobs and a lot of headache there. to shed some light jim justice did all the machine work and helped me order the right thickness headgaskets much thicker. timing lined up perfectly after the right headgasket was in there. first tuner was very aggressive. second guy was awesome but hadn't had a retune since the chevy trans swap. all I know is there was so much goin on and I had enough.
True story.
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- Joined
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1GR stump, will be its new nickname. :crinklehair:
I have a machinist team lined up for that block. Those guys are true pros. They won't have to remove much, but yes, you are right. Might even send my stroker crank to them as well. Hmmm.....
I have a machinist team lined up for that block. Those guys are true pros. They won't have to remove much, but yes, you are right. Might even send my stroker crank to them as well. Hmmm.....
Super Werty
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a very expensive coffee table:laugh:
hrspwr236
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