225skilla Posted October 14, 2010 Report Posted October 14, 2010 Hey guys just wanted to test some brains out on here, ive been doing up a 4k motor and what ive done too it is as follows, Head shaved ported and polished, race cam thige 401, heavy duty springs, block decked and alligned and crank ballanced, flywheel lightened too 6 kg twin 42mm webers high flow extractors etc etc, now here is the question after spending so much time putting it back together, ran for bout 2 mins and stopped with a really bad graunching and died right then and there, will be pulling it apart tomorrow to find out what the cause is just wanted to see if someone out there could guess and see if someone gets it right ill let yas know tomorrow night so good luck guessing! Quote
LittleRedSpirit Posted October 14, 2010 Report Posted October 14, 2010 Something in the valve train. Quote
camerondownunder88 Posted October 14, 2010 Report Posted October 14, 2010 Dropped a lobe on cam shaft. If you didnt run it at 2000RPM straight away then the cam wont bed in correctly and will damage lifters. And reground cams I have seen them jsut drop a lobe snap off etc. can happen so my bed valve train. Cam Quote
TRD ke70 Posted October 14, 2010 Report Posted October 14, 2010 Cam shaft gear locating pin snapped because the bolt is loose! Quote
Trev Posted October 14, 2010 Report Posted October 14, 2010 On 10/14/2010 at 7:50 AM, 225skilla said: twin 42mm webers One carby is missing. Quote
Old fella Posted October 14, 2010 Report Posted October 14, 2010 It broke the furkinator spring. Quote
altezzaclub Posted October 14, 2010 Report Posted October 14, 2010 Got a sound clip of the graunching?? :laff: Difficult otherwise.... Quote
Taz_Rx Posted October 14, 2010 Report Posted October 14, 2010 On 10/14/2010 at 7:54 AM, Evan G said: oil starvation! Really hope you did have oil in it, that would have just been really dumb. On 10/14/2010 at 8:23 AM, camerondownunder88 said: Dropped a lobe on cam shaft. If you didnt run it at 2000RPM straight away then the cam wont bed in correctly and will damage lifters. And reground cams I have seen them jsut drop a lobe snap off etc. can happen so my bed valve train. Cam I'm with Cam too. I also hope the lifter were re-faced? Quote
225skilla Posted October 15, 2010 Author Report Posted October 15, 2010 Well found out what it was.... Here we go but before i do thanks everyone who had a go would like to let everyone know the car is now up and running was not oil starvation or valve train stupid me put the wrong bolt on the cam gear (retarded i know but come on we all make mistakes) and it fell off, the lifters were re faced, after extensive examination I'm very surprised it has not wrecked any thing at all just a grind mark on the cam cover,is this normall? i thought it would have f@c$ed but for now the cam is bedded in and is running i think trd ke70 got the closest and is the winner have a small clip of the car running will try get it uplater Quote
225skilla Posted October 15, 2010 Author Report Posted October 15, 2010 if you go to you tube its under, worked 4k ke70 project, check it out pretty crazy Quote
towe001 Posted October 15, 2010 Report Posted October 15, 2010 On 10/14/2010 at 9:02 PM, altezzaclub said: Got a sound clip of the graunching?? :laff: Difficult otherwise.... Sounded more like an angry Ridgeback when the camera was up close Quote
TRD ke70 Posted October 15, 2010 Report Posted October 15, 2010 Good to hear it didn't damage anything. Quote
19914afc Posted October 15, 2010 Report Posted October 15, 2010 the video sounds like a very angry k motor :worship: Quote
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