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iou
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OK First after 110,000 miles on a 94 GSR, I had a main bearing failure and it was time for a crate JDM ITR engine. All is good and well until last week (2nd year with engine) where my engine died on the expressway in a puff of smoke at 6000rpm just as the VTEC got engaged (yes I have a controller, and with my mods it is the correct rpm).
It seems that I had a crankcase failure which is VERY unusual given the low miles of the engine and the special manufacturing process for the ITR crankcase. Then I got thinking and it seems that the culprit may be the lightened flywheel, resulting in a mistuning of the harmonic torsional damper. If I had torsional vibrations, it can crack the crankcase like a twig. It is possible to improperly install the flywheel without the torsional damper, or is it a necessary part of the driveline?
Since I still have a very good tranmission (LSD, Short gears) and very good engine heads (ITR with crower cams/springs), would it be possible to rebuild, maybe with a B20 block? Or shall I get yet another crate engine and sell my parts? Maybe I need to buy a minivan now! Just kiddin.
any thoughts?
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The Deviant
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You could also look into an aftermarket block.
I have heard good things about Dart blocks.
Plus, they're not quite as expensive as a new engine!!
I just did a search and came up with this place,
I have no personal experience with the shop, but they look decent.
http://www.flatlanderracing.com/dartblocks_honda.html
- The Deviant
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iou
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thanks for the info. The car is R.I.P. though.
After the initial forensics, it seems that I dropped a valve in the piston. Possible spring valve failure, and/or valve retainer.
I had crower cams with springs, with stock retainers and something went really bad. The customer service at crower said "it happens", which I agree.
I guess I will be selling an integra GSR 4DR shell on ebay soon. Oh, an LSD transmission too.
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u-ah-winnah
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Sounds like you broke a camshaft... Springs and stock retainers are rarely prone to failure with such light spring pressures and low valvetrain weight. We're not talking about a big block with over 300 psi on the seat here... and a lot of cam manufacturers have had broken cam issues regardless of spring pressures do to cam core quality issues.
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