Improved Racing Crank Scrapers
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Joined: Oct 2009
Posts: 515
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From: Orlando, Florida
Can you tell us what the thickness of the Callies rods is? We are making a "stage 2" 4.000" stroke scraper that will clear those larger rods.
Thread Starter
LS1Tech Sponsor
Joined: Oct 2009
Posts: 515
Likes: 40
From: Orlando, Florida
Thread Starter
LS1Tech Sponsor
Joined: Oct 2009
Posts: 515
Likes: 40
From: Orlando, Florida
So far most people have said our 4" scraper doesn't work with the Compstar, but we will have an additional scraper available for it soon.
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Joined: Oct 2009
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From: Orlando, Florida
I don't have a good estimate at the moment. It wouldn't be any sooner than a couple of months.
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Joined: Oct 2009
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From: Orlando, Florida
The truck oil pans have a very deep, small sump area. There isn't much room to add trap doors. Those pans will inherently perform better than others without a baffle. We've looked into it briefly, we didn't think we could fit enough trap doors in there for it to be worth it.
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Joined: Oct 2009
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From: Orlando, Florida
Thread Starter
LS1Tech Sponsor
Joined: Oct 2009
Posts: 515
Likes: 40
From: Orlando, Florida
Yes, the Compstar appears to be similar to the LS7 crankshaft, so I think it will fit both. We are still verifying this. The LS7 does have different spacing for the main bolts as well but the new scrapers will accommodate both.
LOL Thread Starter
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Joined: Oct 2009
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From: Orlando, Florida
If we can make it up to you somehow, we will. I guess sending you the new version when it's available wouldn't be much help. 
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Joined: Dec 2011
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From: SoCal
For anyone following this thread, I need to state that I bought the first version knowing full well that the scraper was designed around a Lunati crank and rods. I figured it would be close to work with the Compstar stuff. It was in some areas and some not so much. I spent some time with a hand file making this version fit but I knew before I bought it this might be the case.
The point I am trying to make is Improved Racing offered to replace it twice now with the new version when it is available. I've bought quite a bit of stuff from them and they are very helpful with great customer service. SO, buy with confidence. These guys are great!
So let me ask this as I am looking now at doing the Compstar 4" Crank and Manley H-Beam Rods with ARP 2000 bolts (7/16").
Is the interference with the Compstar rods or crank?
Would the Compstar/Manley combo work?
Is the interference with the Compstar rods or crank?
Would the Compstar/Manley combo work?