LRF4N Posted April 16, 2014 Author Share Posted April 16, 2014 Not really mate a few tweaks but not big power. Was just getting it running properly and looking the way I want it. It's a rolling project with bits n bobs as I go along. It's just rolling down a bumpy hill now Quote Link to comment Share on other sites More sharing options...
coldel Posted April 16, 2014 Share Posted April 16, 2014 Based on reading this thread, I reckon it very much sounds recoverable though! Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 16, 2014 Author Share Posted April 16, 2014 And from the thread on the other forum. I'm defo more optimistic than yesterday morning Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 18, 2014 Author Share Posted April 18, 2014 Here's the pics. Crank case cut: Damage to the crank once pulley removed. There's a hole through it and looks like it's been welded: Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted April 19, 2014 Share Posted April 19, 2014 (edited) PM received and replied to: Weld or fill the hole with some metal filler making sure that the shaft is round and not oversized so that the pulley is a snug fit. Make sure that the inside of the pulley is round and not damaged or oval. Make sure that the bolt on the crank goes fully home. Fit new genuine half moon keys and rebuild. Sorted: Drama over. Alex. Edited April 19, 2014 by ZMANALEX 2 Quote Link to comment Share on other sites More sharing options...
themoffshop Posted April 19, 2014 Share Posted April 19, 2014 Drop me a PM if you need some help chap... Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 19, 2014 Author Share Posted April 19, 2014 Thanks for the help guys, much appreciated Would you consider the car safe to drive until repaired? Quote Link to comment Share on other sites More sharing options...
gsexr Posted April 19, 2014 Share Posted April 19, 2014 The timing belt bottom pulley is pushed past the woodruff slot and onto the messy part. Was there a woodruff in that other hole ? If that hole is filled in what will the pulley locate onto as its pushed on passed the woodruff. Can someone enlighten me as i`m not getting that. Looks to me like someone made there own hole/slot for a woodruff key to go into to locate the pulley. Not convinced this is over yet unless you can effectively have a bottom pulley that is going to line up with the original woodruff slot as in twice the length of the one on there. Guess that was what concerned the mechanic. Its not a case of welded crank more a case of making your own locating slot to match the pulley. Defo need more info on this one.....sorry Quote Link to comment Share on other sites More sharing options...
gsexr Posted April 19, 2014 Share Posted April 19, 2014 Just searched online for nissan skyline crankshaft and its shown with two woodruff slots one behind the other. It looks to me like a case of the original slot at the back being damaged so would need building back up and a new slot machined in for the woodruff. Not do-able in situ. An alternative could be another bottom pulley connected to the one you already have. If it was drilled and dowled together as well as bolted. That would allow the rear one to be in position for the belt and the front section to locate correclty in the slot. Jobs a gooden Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 19, 2014 Author Share Posted April 19, 2014 There were 2 woodruffs in place which he showed me but I think just one on that pulley on the slot further forward not in the damaged slot, if that's what your asking Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted April 20, 2014 Share Posted April 20, 2014 Sorry, perhaps I never made myself clear: I did not mean completely weld or fill up the hole in the shaft. The hole will have to be sufficiently filled with weld or metal filler to hold the inner half moon (woodruff key in place) If you heat weld, you will have to replace the oil seal. If it was me I would use a propriety metal weld/filler to sculpture the rear half moon to the shaft. I would also consider using extra metal weld/filler to secure the belt "sprocket" to the shaft, however removal in the future may prove extremely difficult. You will have to make sure that the belt "sprocket" is in good shape and also when fitted that it is runnung true. The above "botch" is fairly straight forward but should only be carried out by competent person who has an engineering understanding. If carried out properly then you should have no further issues, however a replacement crank is the professional fix. I have not included all the detailed procedures, but the above will give you an indication of the cheap fix. Alex. Quote Link to comment Share on other sites More sharing options...
Ricey Posted April 20, 2014 Share Posted April 20, 2014 What he said ^ Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 21, 2014 Author Share Posted April 21, 2014 Thanks for clarifying Alex that makes sense And thanks for confirming ricey Waiting on prices tomorrow before deciding on re welding or replacing the crank. Depending on cost il probs go with repair for now as a cheaper short term option then plan a conversion longer term Quote Link to comment Share on other sites More sharing options...
Ewen@Clark Motorsport Posted April 21, 2014 Share Posted April 21, 2014 In 15 years of RB re-builds I have seen some awful repairs and so called specialists turning out some shocking work. I have never seen anyone try to repair the keys ways in such a way. In standard form the RB crank is pretty strong if built correctly cutting corners will ultimately lead to self destruction. As I have seen this many times! The RB bottom pulley requires a massive amount of torque to tighten it and have many times seen bottom pulleys come off. The OS Giken RB30 requires slacken and re-torque after first 1000 miles as it produces so much torque in some cases loosens the bottom pulley. You can make a temporary fix however I think you will eventually result in the bottom pulley working its way loose, or spinning a shell as the crank will be out of balance. My advice would be to replace the crank with good used, new shell's oil pump (re-build) ... If you can't then a good short motor... If this isn't an option then I guess you will just drive until destruction. Please let me know if I can be of more help Rich Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 21, 2014 Author Share Posted April 21, 2014 Thanks for your input rich Il most likely get it repaired until it breaks then upgrade v8 style 2 Quote Link to comment Share on other sites More sharing options...
glrnet Posted April 21, 2014 Share Posted April 21, 2014 Glad you're keeping it Irfan Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 21, 2014 Author Share Posted April 21, 2014 Quick update- the mechanic was hoping to get it put back together the way it was but he couldn't relocate the pulleys safely.... It's gonna have to get trailered elsewhere tomorrow once I find out what's happening. Cutting it fine for japfest... Quote Link to comment Share on other sites More sharing options...
glrnet Posted April 21, 2014 Share Posted April 21, 2014 Fingers crossed for you. Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 26, 2014 Author Share Posted April 26, 2014 Quick update. Good news is the cars getting fixed and back on the road soon Only thing is I could only get one guy to agree to the job and he's not back in the country til after japfest so the skyline won't be there Gutted about that so to cheer myself up I'm going car shopping tomorrow 1 Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted April 26, 2014 Share Posted April 26, 2014 Happy days Irfan. Hope that it all goes well for you. Alex. Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 26, 2014 Author Share Posted April 26, 2014 Cheers Alex Quote Link to comment Share on other sites More sharing options...
coldel Posted April 26, 2014 Share Posted April 26, 2014 Ah is that the guy off the forum mate? Worth hanging on for the right guy to do the job. Im just relieved that it all seems like we can get that white R33 build thread competition back underway! Quote Link to comment Share on other sites More sharing options...
LRF4N Posted April 26, 2014 Author Share Posted April 26, 2014 Lol too right mate. Speed reeper is gonna sort it for me Il have a very short build thread for the shed I'm getting tomorrow Quote Link to comment Share on other sites More sharing options...
Chan267 Posted April 28, 2014 Share Posted April 28, 2014 Sorry to hear about this but hope it gets sorted out soon and back on the road again. Quote Link to comment Share on other sites More sharing options...
Shifty6Speed Posted May 5, 2014 Share Posted May 5, 2014 Crickey, that really sucks dude! Sounds like a Keighley Trade Centre special... 1 Quote Link to comment Share on other sites More sharing options...
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