You are obviously a newbie on Speedtalk so I will start by saying welcome.
Thanks, and thanks for posting.
Newold1 wrote:If you are trying to get some good more exact advise and discussion on your engines issues you need to start by posting some more complete specs and information on the build.
OK I agree.
Newold1 wrote:It would also be nice to know some specifics on your Holley EFI system, especially the ECM model and information on the tune in the ECM.
HP, what would you like to know ( I am a newbie with injection so be patient, took a long time to get to this point and I still have tons to learn).
Newold1 wrote:Couple of suggestions. Looking at the dyno sheet, my comments there are parallel with others on this post that the camshaft is the part that is peaking your power in the mid 5000rpm range and not the right design for best power and torque for this combination.
Dynoed with small carbureted intake and 850 cfm carb, which I said affected it, although the cam is still too small.
Even the new cam is too small? I thought it needed more lift, engine builder said more duration, maybe both?
Newold1 wrote:Please post the complete cam specs that include LSA and intake center line. We also need to know the ratio on your rockers.
1.7 Jesel sportsman rockers. Cam cards are posted. Do they not show up, or missing info?
Newold1 wrote: My other comment is that you should not do dyno power pulls with the engine coolant temp at 125 degrees! If that was the real block temp you were hurting the engine at those temps on dyno power pull loadings.
Engine builder said that also, I was not privy to that info at the time. I said next time due to oil temp/pressure I want it hotter.
Newold1 wrote:It is pretty obvious that your engine is right at the safe spot on oil pressures at top rpms but that can be a result of a lot of oil system issues. Possible that if engine were warmer where it should have been for the test, the oil pressure could have been even lower? What oil and viscosity was being used? What oil pump? This looks to be an aftermarket block, not sure of brand but you can enlighten us on that, as well as the history of the engine if any.
Issues should be good to go on pressure, first pump was Moroso billet pump, standard volume, dyno intake and dist. In the car Injected intake, different dist. Had pressure problems from beginning. Pulled the engine put in Titan gerotor pump, slightly better but still an issue. Titan pump has a different drive at the pump and I made the mistake twice of not checking the distributor/ gear / galley alignment. Mismatched parts and trying to solve it in the car. I will take the blame, my builder is helping me fix this. I have every confidence in his ability to hone the bores and build this thing again. Although he should have been more on top of checking things I had no idea was going to be an issue. He as well as me assumed (oh boy) that the intake/ distributor would not be an issue. Bowtie block, brand new, never should have went right to 4.600 (someone was going to ask why eventually).
Newold1 wrote:It is also pretty obvious with the low use to that point that the engine is burning oil and there could be multiple reasons but most would suspect ring issues or bore finish reasons. What are the specs. on the rings, piston to bore clearance, how were cylinders bored, honed and final finished?
It is burning oil, not from the rings and such, but from the way my PCV system( if you want to call it that was set up). It was pulling in oil. That will be fixed.
I will have to get that info.
Newold1 wrote:As others here have said, good leak down percentages alone are not a total determiner of proper ring function. I've seen BBC engines where the engine was having oil control issues in the cylinder and the leak downs measure 2-3% and found that someone had installed the second ring upside down an it happened to be a napier and it was pulling a lot of oil up below the top ring. the top ring was a good seal and leak downs were fine but the top compression ring could not keep up with the excessive oil control it was trying to measure. Same thing for oil ring package, could be wrong tension, installed wrong , etc.
Pulled it apart, bores looked like crap, metal in oil came from worn camshaft distributor gear.
Newold1 wrote:As for your lifter issues, that can be a bunch of reasons, ie: lifter bore clearance, small base circle size allowing lifter oil passages to drop below bottom of lifter bore, to low of oil volume or pressure to lifter galleys, etc. , etc.
Lifter issue was because of oil pressure, lifter bore clearance was .0015". That is why I put in the solids to try and find the issue. Crower HIPPO, Morel HIPPO, Morel non HIPPO. Lower pressure with the HIPPO. Not much better with non HIPPO. Excessive Oil was not coming out from lifter bore with non HIPPO.
Newold1 wrote:I am going to say something here that may rub wrong to you and maybe others. I realize your engine builder is a friend and you want to be a considerate owner to him as a friend. Not being privy to all your and his discussions of these problems I cannot know the real content and meaning of the discussions but I can say this: If your friend builder machined, assembled and delivered this engine to you pretty much ready to run, then he should take responsibility for the build.
If I built this engine and it had these issues, I would have you return it to me, carefully examine and explore simple checks and if necessary complete disassemble the engine and find the problem and let you know directly that either a part or parts failed, or I SCREWED UP ON MY BUILD! We don't know yet here the detail of this build and what total part your friend builder took part in, but we should so we can help give you some good advise of where to go from here. Good engine builds usually don't have this many major issues if careful proper methods were used and good parts were properly used.
You are right to take the approach to find the issues and problems and then go back together with a good build!
Hope the good people here on Speedtalk can help you find and correct your problems. thank you for giving us the chance.
What I can say here is don't go buying and replacing a group of parts here until you isolate all the total issues and find good fixes for all of them.
Why don't you tell me how you really feel. LOL doesn't rub me the wrong way at all. I need all the info I can get so I can tell him what I want done. I don't care if he gets a little mad at me at this point.
I take the blame for some of it, trying to fix it in the car, dealing with oil pressure issues and trying to learn injection at the same time so I could drive it. Bit off more than I could chew. I feel the issues have been pinned down and will be fixed, as for the cam????
I will finish this later. Thanks