Anyone used Gm's neutral ones and know what gain, if any, they give?
I would love to just toss them outta the block, but then the main bearings would have no oil. I could plug the oil holes for the shafts, but that may be a last resort kinda thing.
Oh and I know they balance chaft chain drives the water pump, but I will probably be using an electric pump anyway.
1988 Pontiac Fiero, engine transplant underway.
2004 ECOtec, built and boosted
Hunter Sylvester wrote:Anyone used Gm's neutral ones and know what gain, if any, they give?
I would love to just toss them outta the block, but then the main bearings would have no oil. I could plug the oil holes for the shafts, but that may be a last resort kinda thing.
Oh and I know they balance chaft chain drives the water pump, but I will probably be using an electric pump anyway.
I have removed the balanceshafts and waterpump.
I replaced the inner bearings and turn them 90dgree so they block the oilholes.
On the outer ones i machined dummys to block the oilholes.
You have to block the holes for the chaintensioner too.
Total weight-savings on the engine is about 9kg incl a electric waterpump from davies craig.
I would say that the gain in total on this is about 10-15hp
i have removed them to except the water pump i kept with the shaft gears as idlers for the chain and its a nitceable gain the car revs a hair quicker and it pulls better through out the powerband. otherwise i did what he said with the inner journals with the blocking the journals. if you contact Level Zero Motorsports they are making a kit with everything you need to do it not sure on a price though
The one, the only, ME.
I'm curious about the neutral balance shafts and wonder how much extra power would come from using them?
"Sig under construction"
Nice I knew someone would have done this.
So you just turned the carrier bearing 90 degrees so the oil holes are blocks, and machined hole-less bearings for the outer ones...sounds great. Any pics? Thanks.
1988 Pontiac Fiero, engine transplant underway.
2004 ECOtec, built and boosted
How did you guys get the inner bearings out? Will they press out towards the back of the block or do they ahve to come forawrd towards the other b.shaft oil hole.
1988 Pontiac Fiero, engine transplant underway.
2004 ECOtec, built and boosted
they would have to come out the front other wise they are stuck in there id like to know how he got those inner bearings out also
The one, the only, ME.
Hunter wrote:How did you guys get the inner bearings out? Will they press out towards the back of the block or do they ahve to come forawrd towards the other b.shaft oil hole.
I made a tool that fitted inside the bearing with a flange and forced the bearing towards the back.
Then i took a long rod and deformed the bearing to get it out the in the front.
So you pull the bearing towards the timing chain mounting side of the block? The tool looked like an L to take it out? Just don't wanna pay 250 bucks for the kit.
Also, the idler shafts, did you just machine off the rest of the shaft and just leave the first bearing assembly/chain gear.
1988 Pontiac Fiero, engine transplant underway.
2004 ECOtec, built and boosted
I trie for the life of me to get those inner bearings out. I even heated up in bearing buldge on the outsideof the block thinking that aluminum expands 2 as much as steel that this would loosen the grip on the bearing.
Any ideas?
1988 Pontiac Fiero, engine transplant underway.
2004 ECOtec, built and boosted
I have a set of the GM neutral balance shafts but I do not know if I gained any power from it because I built the whole engine all at one time.
The engine feels smooth though.
so how much work is it too put these in?
thanks james
Listening... If anyone gets more info on the LVL 0 Kit let us know!
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15.71 @ 87.9mph 9-17-05
