SeanDezart
Well-Known Forum User
How much did you pay for the engine ?Just how far do you go???
Nuts, bolts, washers etc should be new.
How much did you pay for the engine ?Just how far do you go???
How much did you pay for the engine ?
Nuts, bolts, washers etc should be new.
how would xraying the block pick up a crack in the crank.Somebody should have x-rayed the block before playing with it.................Nissan won't give two farts - it's over 30 years old !
without teaching you to suck eggs when you rebuild this engine make sure you have a good look at the rear main cap. When you put the crank back in it will be tight on number 6 journal due to some damage to the rear bearing housing. A small amount of work on the rear face of the no 6 main bearings will allow the crank to rotate freely.
Worryingly the fatigue fracture looks as if it started from what I assume is the oil way, not easy to tell from the photograph. If you want to know the exact cause and starting place, I can get a metallurgist to look at the fracture for you (FOC).
When using ‘second hand’ crankshafts it is best to get them ‘crack tested’ before re-building the engine using the magnetic particle test method.
Less than you did.......by a lot...
Yep and mine's still running after 4 years and countless track-days and several thousand miles of spirited driving !
Ben - no, not directly but having the block tested thoroughly is primordial and would have shown up any problems in the oil ways and also water ways. That's what also bumps up the price of built-to-order engines.
I've spent a considerable amount of money having a performance engine (essentially a road engine) that is reliable because :
a) I don't want the time lost and car off the road/breakdowns
b) I don't want the expense of having it stripped down every 'x' miles
c) I'm crap at that and lazy
I assume that the crank was balanced ?
Sean,
I think if you re-read Bens post he is asking how x raying the block will stop the crank from breaking.....and rightly so.
As for my engine, yes it was checked and double checked and all was well so no need to do anymore. Yes the crank was balanced.
I cant help it if a 32 year old crank finally gave up the ghost.....I think it did well personally.
Stick to brylcream n tarmac.........:lol:
Grolls - I read well what Ben said - obviously it wouldn't have prevented any issues directly from the crank. But it would have prevented any secondary isses leading to other component damage. You say checked and re-checked....how ? And are you going to have it x-rayed now ?
All I remember is that at Le Mans you revved the nuts off it outside the camping and to do that safely, an engine must be prepared properly - THAT, done frequently can also accelerate wear and fatigue.
If, after all that you still consider that everything was ok - you are the unluckiest zedder here mate.
Are those Rebello horses ?:lol:Yes to balanced now.......new cam kit.....ta Mr F and a few other bits from others that should take it nearer the 250 marque......
?
All I remember is that at Le Mans you revved the nuts off it outside the camping and to do that safely, an engine must be prepared properly - THAT, done frequently can also accelerate wear and fatigue.
hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaahahahahahahahahahahahahahahaahahhaYes.
Sean said:Are those Rebello horses ?:lol:
260tt said:Lmao !!!!