damn...

jeep_man_401

Well, I suppose I'm back at square one. :(: While timing the motor, I restarted it and the oil pressure pegged at over 100psi and blew the filter gasket. I shut it down right away, but it has now oil pressure now...don't know if the gauge went bad or...I pulled the dissy and was going to turn the pump over but then found the gears wearing already. Both the dissy and the cam gear are wearing. :(: I haven't had this happen before. I suppose all that crud is all over and it'll need bearings again? It had 60 to 80 psi at 3000 to 4000rpm...I was trying to turn down the pressure. What's the the problem with the gears wearing, I know other people have had this before. I checked the oil hole in the cam gears before putting it togeather? Maybe to much pressure? I'm running the MSD dissy. Any ideas? Would the bearings be fried now? Dang and it sounded so good. #-o

jeepsr4ever

!!!!!! Yes at 100psi you can eat a filter and a set of dizzy and cam gears even the hardened ones we sell. I would put the other spring in and try it again.,

jeep_man_401

Think the bearings are any good anymore? :-| Oil is alittle gray now. Funny thing is I had the lighter spring in when this happened. I suppose I'll have to call Indy again. Possibly the dual line and pump just sucking to much oil?! :-| I'm thinking of draining the oil and putting in fresh 5W30 and flushing it through to see if I have pressure...Maybe I blew the valley line...or blew the gauge.. 111!!! Still worried about the crap in the oil getting into the bearings...it's there now I'm sure...but how much damage I wonder.

jeepsr4ever

Man why did this have to happen :oops: This is like the third time a Indy cover has over pressurized a nicely built engine. Yours crank is probly ok but like you said your oil was silver and you probly need new rods and mains. I can probly save you a few bucks and might have them on the shelf. Hey, she didnt overheat did she?

jeep_man_401

nope...it got to about 220...but then settled in pretty good...about 10.5 to 1 with a 2 row rad. (for now). What did the other guys do to "under pressure" the Indy cover. (They make 2 pumps....one a high vol that they requmind for stock engines and one regular one they use on they block) I susspect that the high vol. is just to damn big.

Blown7

jeep_man_401 wrote
nope...it got to about 220...but then settled in pretty good...about 10.5 to 1 with a 2 row rad. (for now). What did the other guys do to "under pressure" the Indy cover. (They make 2 pumps....one a high vol that they requmind for stock engines and one regular one they use on they block) I susspect that the high vol. is just to damn big.

A geared pump cannot build pressure without restriction. Were your clearances correct? I'm running .0035 clearance on the rods.. A loose engine never seizes. If the small spring was too much what else can you use? Too much oil pressure will spin bearings, if you have to build the bottom end a second time, dowel pin the bearings. And add some pressure reliefs cutouts at the connecting rods ( use a surface grinder with a 1/2 inch wide wheel, .010 deep) although I also have a pin oiling hole. I heard thru the grapevine some new engines don't even use the tang on the bearing or have a cutout at the rod or main anymore. I'm very interested on your findings.

Jeff

jeep_man_401

The rods did have the tang on them...I did make a cutout for the oil squirt hole for the rods. I took a sample of the oil, going to filter it and look it over well. I did alot of work to the oil passages in the block(radias the corners, enlarge holes etc. went all out) Only think I can think that happened is while I was trying to get the pressure down to normal levels the dissy gear was already wearing, some of the fillings got into the pressure relief on the pump and it stuck closed. :-| (becuase on a restart the pressure gauge went right up to 100PSI like NOW!) Don't know...I have to drain the oil and pull the front cover for sure. I did take off the hose out of the filters and spun the pump and got oil. So the pump is good. I think it might have blew the pressure gauge also. No reading on it right now. So I'll have to pull the intake also and see if my valley line blew also or it's just the gauge. If the rods and mains are bad, that would mean the cam bearings are bad also. :(: Maybe I'll just clean it out and install new oil and drill a few holes into the oil main passage and rev the piss out of it...naaawww. Just when I thought things where going to start to get fun this happens.

jeep_man_401

Rods and mains did there job...and sacrificed themselves in the process. I suppose on a stock rebuild I could use them. But I will be replacing them and the cam bearings. I sent the cam back to get checked also...some lobes looked alittle to worn compared to others. A few lifters looked alittle bad. :idea: Yes, I had the heavy springs in, I know... :oops: but this motor is like an import to work on...no room to do anything! Worse off, I hate working on trucks. 111!!! Should have put it in the Javilen :-| Just as I thought on the pump...the pressure relief was stuck almost closed. :(: A few light scratches on the piston is all it took to make it stick. I'll polish that up and alittle smaller. MC a few thousands off?? (I have a mic.) Got your gears and filler tube...look nice. :? I'm waiting for some warmer weather to work on it some more and I'll have to wait until the cam gets back also. All in all it was a pretty expensive start-up. :smile: Learned a few more things along the way though...I knew this one was going to be different as nearly everything is custom and/or high perf on this thing. I'll also buy the new matched gears from now on for any more rebuilds....cheap insurance!! :oops: My 360 was basicaly stock with a big cam and some port work. I'll from now on going to pressure the oil pump with the motor out ot the truck and look for oil to the gears also. Couldn't do that the first time as I had to cut the lines to length with the motor in the truck. (Braided AN line is spendy!) I would highly recomend this to anyone that is considering a Indy cover. On the plus side the pump only suffered very very light scratches about 1/4" long. I'm sure this would have tosted a stock cover (W/O nickle plate)...but then again I've never seen a stock cover push 90PSI at 3000RPM.