3rd Spun bearing on motor in 1 yr!
Don't quote me but isn't the factory crank nitratred? Then when polished it takes the nitrated finish off?
If I'm wrong correct me as I have no idea lmao.. Also where can you get a crank nitrated?
-Peter
If I'm wrong correct me as I have no idea lmao.. Also where can you get a crank nitrated?
-Peter
contamination in the oil will kill rod bearings quite easily. very difficult to get all the particles out after the first failure. oil coolers reused causes it most of time. but reusing the head without cleaning it will do it as well. virtually any reused part can hide particles that dont come out even with cleaning. that loosen and get you later.
shame more builders dont recommend Nitrided cranks in their builds. The slightest knock on untreated crank will damage the journal. With treated crank you can drop the pan and install fresh bearings and you are ready to rock. sounds like two engine rebuilds could have been avoided if they had been built with nitrided crank. I had a customer call me after his first engine build had an oil change. car came back to me with only 30psi pressure and very loud knock. Saw the pan had been used to jack car up. starved pickup tube of oil. car was driven two weeks on very low oil pressure. Pulled pan to find bearing completely wiped. car ran perfect with just new bearings swapped in.
heres a picture of the bearing shells from that engine.
shame more builders dont recommend Nitrided cranks in their builds. The slightest knock on untreated crank will damage the journal. With treated crank you can drop the pan and install fresh bearings and you are ready to rock. sounds like two engine rebuilds could have been avoided if they had been built with nitrided crank. I had a customer call me after his first engine build had an oil change. car came back to me with only 30psi pressure and very loud knock. Saw the pan had been used to jack car up. starved pickup tube of oil. car was driven two weeks on very low oil pressure. Pulled pan to find bearing completely wiped. car ran perfect with just new bearings swapped in.
heres a picture of the bearing shells from that engine.
filter housing, oil lines, ANYTHING AND EVERYTHING THAT HAD OIL GOING THROUGH IT!!! there are also access holes in the crankshaft and the cylinder head that need to be cleaned throughout. id find a new builder, because any smart one would have told you all of the above. What break in oil are you using?
Evolving Member
Joined: Dec 2003
Posts: 305
Likes: 0
From: England
i would never run any 30wt oil in a built engine like that. i imagine the rods are set somewhere around .002"-.0025", thats not going to end well with such a thin oil at higher rpm's.
youre doing something wrong for sure....
my roommate killed 3 sr20's last year, 2 of them built. but, he is a bit of a meathead and totally know why it happened.
i agree that 10-30 shouldnt have been used.
my roommate killed 3 sr20's last year, 2 of them built. but, he is a bit of a meathead and totally know why it happened.
i agree that 10-30 shouldnt have been used.
Yes I checked it every half tank of gas. I was ready to finish by build also.. hta86 on e85 
.
.Did you check your oil often with the Buschur motor? Those motors consume a good amount of oil and have to be checked often (they are are built pretty loose compared to a stock motor with tight clearances). Also, did you replace your oil cooler before putting in your new motor?
Either way, sorry to hear about your luck
Either way, sorry to hear about your luck
Car is babied to and from work, I usually do one 2-3rd gear pull each way. Sometimes a 1-4th. Depends if I am in good mood or not 
. I can't shift past 8k because of act! I have rev limiter set 8900. I have never hit that limit. I Have reved near that in 4th though. I may do a 2.3...
. I can't shift past 8k because of act! I have rev limiter set 8900. I have never hit that limit. I Have reved near that in 4th though. I may do a 2.3... Yikes. I'd have a tough time not just pushing the car off of a cliff after all of that, let alone selling it and building something else. How are you driving it? Mashing the throttle all day every day? How high do you rev it out? 8,000+? If you're hard on it, and your goal is a 500 whp daily, then I think you'd be better off building a 2.3L or 2.4L, then you can run fewer revs and less boost to achieve your HP goals, and SHOULD experience greater engine longevity.
yes same block, no oil pressure gauge and turbo seems fine. It may need rebuild I know it has some miles on it. I know alot of people say buschur engine are built loose and will consume oil. But I would consume half a quart a week. I was averaging around 400 miles a week. The more I would get on it, the worse it would consume. I changed plugs not to long ago and the plugs looked great. They didn't look as if any oil was getting in the combustion chamber.
Has this always been the same block? I find it hard to believe that much hardware problems isnt related to some hardware issue, i.e. mainline on the block, oil galley, etc.
Do you have an oil pressure gauge on the car? If so what has it been reading? What does the turbo look like?
Aaron
Do you have an oil pressure gauge on the car? If so what has it been reading? What does the turbo look like?
Aaron