Freshly built engine hard to turn over at first
I have recently finished putting together my bottom end consisting of a 81.5mm GSR block, stock gsr crank, eagle rods and wiseco pistons. I went to first turn the engine over and I notice that it is kind of hard to get going but once it is turning there are no snags and is relatively easy to turn over. If you let it sit over night it will again be hard to start turning but then be easy once you get it going. Is this normal?I've built engines in the past and i dont recall them being this hard to get started turning but maybe I just forgot. Is there a TQ spec for this? like say 10lb ft to get it moving or so?
Note: All bearing clearances were measured and all of the rods and mains came out to .0015", OEM bearings were used and I followed the tq sequence and specs given by honda for the mains and the tq specs given by eagle for the rods. I also used very liberal amounts of assembly lube on all bearings and oiled all of the main bolts and used arp moly lube on the rod bolts and underside of the bolt heads.
My real question is how much TQ should it take to get it started turning? I understand its going to be a little harder to get going than it is to keep going.
Note: All bearing clearances were measured and all of the rods and mains came out to .0015", OEM bearings were used and I followed the tq sequence and specs given by honda for the mains and the tq specs given by eagle for the rods. I also used very liberal amounts of assembly lube on all bearings and oiled all of the main bolts and used arp moly lube on the rod bolts and underside of the bolt heads.
My real question is how much TQ should it take to get it started turning? I understand its going to be a little harder to get going than it is to keep going.
Last edited by BMo Tuning; Mar 9, 2009 at 05:13 PM.
glad im not the only one in this boat, i just put mine together as well, i used acl bearings and all mine were all right on the money as well except fo one rod, a lil too tight for what i want at .0010, im changing that out as soon as i get to honda on monday to get to the .0015 clearance. If the motor is out in your garage and its like 0 degrees out there, the engine will be harder to spin than say its been sitting in front of your fireplace all day. double check your rod clearance is my suggestion, cause in my situation, if i disconect my #1 rod which is the too tight rod, and # 4 rod from the crank, its very easy to spin the crank than it is when i have all 4 connected, hell when i have all of them but #1 its easier than with #1 coneccted. I hope with the new bearing in mine will solve the problem and if not i hope someone can come up with n answer to help us out, good luck
what assembly lube are you guys using? it could just be the assembly lube, some is REALLY sticky, kinda like partly-dried glue.
Also if your turning it over by hand with a wrench or rachet it should take more then 10ft/lb's of pressure. If it takes more then this something is wrong. It will usually take between 7-8ft/lb's to turn over by hand.
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hondaholic13
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May 12, 2012 10:08 AM




