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| Northstar rebuild: Will style (Page 39/119) |
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Will
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OCT 22, 06:27 PM
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Both corrosion and appearance.
I don't want it to be some unseemly color, but I don't want it to look like old weathered aluminum that's had 15 years of exposure to road grime either.
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Will
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OCT 23, 09:01 AM
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Marvin McInnis
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OCT 23, 02:20 PM
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I presume you have considered the Alodine chromate conversion coating process as well. It is well proven and easy to apply even in a small shop. [This message has been edited by Marvin McInnis (edited 10-23-2008).]
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Will
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NOV 07, 11:55 AM
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Crank's done and on the way.
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AJxtcman
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NOV 08, 09:12 AM
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Nashco
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NOV 10, 10:15 PM
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| quote | Originally posted by Will:
Crank's done and on the way. |
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So...what did the final before/after weight come out to? MOI? Dare I ask what you ended up paying for all that fancy balancing?  I figured you'd post the details up once you got it done...perhaps you're waiting to get your hands on it, I wouldn't blame you, especially considering you're having the crank shipped.
Bryce
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Will
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NOV 11, 08:56 AM
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I don't have my notes in front of me, but the shop took all the data I wanted. They couldn't measure MOI, so I'll have to be contented with calculating a delta MOI.
Tilton claims that a Chevy flexplate and Chevy crankshaft have the same MOI, so a modest reduction in MOI on a crankshaft isn't such a big deal. However, I wanted to get the shortblock basically as built as it can be so I never have to tear it down to try anything new.
The end product that I intend will be a spreadsheet capable of calculating the correct cut depth a priori from a few (or several) measurements on the crankshaft (start angle, stop angle, thickness and outside radius of counterweights; angular location, diameter & depth of pre-existing balance holes; imbalance of initial spin; etc.). In theory, a shop that knew how to do that could offer a lathe trimmed balance service for only half again as much as a conventional balance job. I might even be able to get pretty close using just the change in bobweight instead of an initial spin...
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Will
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NOV 18, 11:54 AM
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As of Saturday I have all my parts back. I picked up the block, previous ruined crank, homemade torque plate, sample cylinder heads (torqued to the block for align honing) and both new sets of pistons on Friday. Fedex dropped the crank off on Saturday.
I am not happy about how the crank was packed. It was in a plastic bag in a great big box... and that was it. The snout of the crank had punched a hole through the box, the teeth of the trigger wheel had punched through the bag, etc. I have not yet had the oppotunity to clean the cosmoline off of it to check the journals, although they did look ok through the cosmoline. <sigh>
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Fiero STS
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NOV 18, 12:09 PM
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Hope the crankshaft is OK. I have been watching your build thread for quite some time. I am interested to see how this all comes together. Also will be nice to see if all of your improvements yield a substantial increase in net horsepower and longevity. Your next challenge will be to find a transmission with the proper gearing and torque capacity to handle your new engine parameters.
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Will
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NOV 18, 01:11 PM
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I hope it's ok, too 
For now I'll continue to use the modified V6 flywheel and Spec stage III. I'll also continue using the 282 I just built with 2.19 2nd and 1.03 4th. I'm just going to switch it over to the 3.94 final. Eventual switch to a Tilton 2 disc setup will take most of the inertial shock loading out of the system and free up about 50 dynamic HP in 1st gear. If I ever blow that up, I've got a 284 on the shelf.
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