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Old 12-09-2009, 05:30 PM   #1
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Default Who's had an engine crankcase crack?

I'm curiuos to hear how many of you have had an engine's crankcase crack, what kind of engine it was and what car it was in. Although I think I know which brand has the most failures, based on what I've heard up until this point, I'm trying to get information from other racers to see if I'm correct.
Thanks for your input
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Old 12-09-2009, 05:34 PM   #2
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i have never cracked one myself, but have witnessed 3 os vspec's
(associated rc8,hot bodies lsp,mugen mbx5), 1 nova +4(losi 8b), and 1 sirio cl7b sti(kyosho str) crack.

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Old 12-09-2009, 05:34 PM   #3
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i cracked my os v-spec case in my rc8 around the six gallon mark
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Old 12-09-2009, 05:44 PM   #4
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Ive cracked a case in a Hyper 8, Hyper 9 and a Tamiya. I have also had a Losi truggy and buggy, Jammin X-2 CRT and a MBX6 that I did not crack a case in. Cases cracked were a V-Spec, a Ninja JX and a Novarossi. Seems pretty random to me, not due to car designs anyway. Unfortunately, cases crack sometimes.
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Old 12-09-2009, 05:44 PM   #5
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I had a V-Spec crack in an MBX6.
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Old 12-09-2009, 05:51 PM   #6
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an os v-spec and an rb c6 blew an hole out of the bottom of the crank case. but both of them crack when i wasnt using a one piece motor mount and i havent had one crack and i have been told one piece motor mounts help prevents it from happening but i may be wrong just repeating what i have been told.
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Old 12-09-2009, 06:38 PM   #7
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Vspec in st rr
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Old 12-09-2009, 06:38 PM   #8
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Cracked a nova 3 port in my mbx6, looked like the carb took a hit at the same time. The high speed needle was tweeked, maybe took a hit and broke the mounting tab on the case. Also using the stock 2 piece mount.
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Old 12-09-2009, 06:42 PM   #9
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Quote:
Originally Posted by tallyram View Post
i have never cracked one myself, but have witnessed 3 os vspec's
(associated rc8,hot bodies lsp,mugen mbx5), 1 nova +4(losi 8b), and 1 sirio cl7b sti(kyosho str) crack.

that was my nova plus-4 case that cracked. its because the motor kept coming loose at the S.I.C race and it cracked near the motor mount hole.
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Old 12-09-2009, 06:57 PM   #10
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OS V Spec,(3) Jammin X-2, X-1, RB WS7 Jammin X-1, GRP .21 Tuned SH Truggy, GO .21 Losi 8T, SW.21 MBX5R,They all Break, Depending on what you do, how much you race with what engine and what the surface and track is like...we race on alot of sunbaked "concrete" tracks in the summer...
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Old 12-09-2009, 07:33 PM   #11
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3 go cases, older 07 and 08 series
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Old 12-09-2009, 07:37 PM   #12
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I had the big end journal break of my AxeRossi, this put the conrod through the bottom of the crank case.
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Old 12-09-2009, 07:39 PM   #13
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I cracked a "old" vspec on the very bottom...they are netorious from the rod hitting the bottom of the case (worn crank pin/rod bushing) on the older style cases...
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Old 12-09-2009, 07:53 PM   #14
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My GO tech 7 port. Was running on the track in practice by myself when I thought I flammed out. Brought it back to the box, and snap! Right in half.

Up until then it ran awesome. Not quite sure why it happened... Totally awesome none the less!
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Old 12-09-2009, 07:59 PM   #15
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Quote:
Originally Posted by RobS View Post
My GO tech 7 port. Was running on the track in practice by myself when I thought I flammed out. Brought it back to the box, and snap! Right in half.

Up until then it ran awesome. Not quite sure why it happened... Totally awesome none the less!
That is AWESOME!!!! I have never seen that happen..........
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