Main girdle
01-24-2008, 03:39 PM
#21
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The tune was the same on Steve's car when he went 189. I don't think you could see over 1700hp on the head gaskets with an aluminum block, but more bolts will help! The law of diminishing returns will start to apply, but if Mike and Steve can get near 2000hp they will go near 200 if the tires let them. I expect to see the "Red Rocket" in the "200" range when you guys get more time on it.
The thrust bearing damage is likely related to his staging, but with over 200 runs I would call it acceptable. We will still be looking for ways to make it last longer though! One thing that will help is recording your thrust endplay before you take the car out to see if we can "map" how long they last.
Kurt
The thrust bearing damage is likely related to his staging, but with over 200 runs I would call it acceptable. We will still be looking for ways to make it last longer though! One thing that will help is recording your thrust endplay before you take the car out to see if we can "map" how long they last.
Kurt
if they had actually put some boost to it on the dyno it would have pegged it like paul did. Steve was running in the mid 180's at 3400, it's probably a little higher than 1600.
I'm betting his thrust bearing is more a result of the forced staging habits we have for turbo cars. I'd be curious to see what Tom's looks like after the burndown.
I'm betting his thrust bearing is more a result of the forced staging habits we have for turbo cars. I'd be curious to see what Tom's looks like after the burndown.
01-24-2008, 04:05 PM
#23
It seems like he is saying to take before and after measurements to see what the change is . I don't think you would want to wear past point X before replacing the bearing is all he is saying I believe. I am running the girdle on both of my cars and will say that I probably would opt for billets and pining the crank IMO. After using them I don't think they are doing much exept for main cap strength itself. I haven't had any main issues caused by the girdle yet I just think that the other pinning the mains is a safer and just as strong.
Jeff
Jeff
01-24-2008, 04:32 PM
#24
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12 said it perfect! If Turley, Brown, Harlan and Kempf all start gaining endplay at 100 passes, you know to change the bearing at 90 passes. If you gain .001 every 5 passes, then a fix will need to be made. Until you have some time to collect info, we can only use our best guess.
We can do things that will protect the thrust, but is it worth the cost of change is the question.
Kurt
We can do things that will protect the thrust, but is it worth the cost of change is the question.
Kurt
01-24-2008, 04:45 PM
#25
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Like Kurt said...Once it goes out of range we'll know after so many passes it's time to throw in a new one. We usually just run them all season then crack them open and see what was and wasn't happy. 
Inspector12, it would be interesting to see how much the caps have been walking on your motors with that girdle. The pinning makes a huge difference.
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
Also, the girdle we run on the Camaro is the W2W one. Not the thin one in the pictures.
Inspector12, it would be interesting to see how much the caps have been walking on your motors with that girdle. The pinning makes a huge difference.
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
Also, the girdle we run on the Camaro is the W2W one. Not the thin one in the pictures.
01-24-2008, 05:35 PM
#26
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01-25-2008, 02:19 AM
#28
It is a solid dowel that is drilled into the block and the main cap to make sure as the block tries to move the pins will help keep the motor more stable and stronger.
Yeah I am not that pleased with that part of my motors as I asked about pining the caps also and I was kinda pushed away from that by the builder, I think by the extra work involved, but I know they are moving a little as I just put the black car back together and you could see a little bit of movement on them not bad, but it doesn't have a ton of miles on it either. That is to be expected though anybody making @ 600rwhp on an aluminum block will show some movement from what I have seen and that is just a given.
Inspector12, it would be interesting to see how much the caps have been walking on your motors with that girdle. The pinning makes a huge difference.
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
01-30-2008, 01:37 PM
#33
Like Kurt said...Once it goes out of range we'll know after so many passes it's time to throw in a new one. We usually just run them all season then crack them open and see what was and wasn't happy.
Inspector12, it would be interesting to see how much the caps have been walking on your motors with that girdle. The pinning makes a huge difference.
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
Also, the girdle we run on the Camaro is the W2W one. Not the thin one in the pictures.
Inspector12, it would be interesting to see how much the caps have been walking on your motors with that girdle. The pinning makes a huge difference.
I ran stock caps on my old stock LS2. The caps were sawing bad on the motor. But it went 8.50's @ 3700lbs. I think pinned stock caps will hold a lot of power. A buddy of ours is going to be running that this season in the 1200 range. We'll see what happens...
Also, the girdle we run on the Camaro is the W2W one. Not the thin one in the pictures.
Mike or Kurt,
would billit caps help over stock pinned caps??
01-30-2008, 05:32 PM
#34
I think the whole goal is to limit how much the block twists etc... I don't think it is a main cap strength issue. So I am saying that the billet caps might be stonger, but they won't do anything for the twisting unless they are pinned also.
Jeff
Jeff
01-30-2008, 05:38 PM
#35
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pinning the caps is to prevent them from walking,unpinned caps will move around alot on high hp applications-all aftermarket blocks have pinned or doweled caps,billet caps will do it less because thet dont flex as much but they still will walk
