As much as you can really
paul
Crank Flex
Started by
haz
, Aug 10 2009 12:03 PM
20 replies to this topic
#16
Paul Wiginton
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Camshaft & Stage Two Head
- Location: at home
Posted 10 August 2009 - 06:45 PM
#17
Sprocket
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Great on Injection faults
- Location: Warrington
- Local Club: Manchester Minis
Posted 10 August 2009 - 10:01 PM
That looks very much like what mine did.
It could be just down to a little shaping. I dont think the correct rod/ bolt combination is the problem. But Im also sure paul is correct about the bolts being incorrect. Don't get that wrong as it will destroy the engine.
It could be just down to a little shaping. I dont think the correct rod/ bolt combination is the problem. But Im also sure paul is correct about the bolts being incorrect. Don't get that wrong as it will destroy the engine.
#18
Sprocket
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Great on Injection faults
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Posted 10 August 2009 - 10:09 PM
Ok Thanks Paul, it seems I have been issued the wrong bolts then. Dissassemble number 6 it is :\
Im half tempted to not bother sending them back as I cant be bothered with the hassle as I bought them probably 18 months ago. If i were to grind them, how much clearence would you recommend I aim for?
Do not grind them!! buy the correct ones, it could end up with a destroyed engine otherwise. These bolts are highly stressed, if they are wrong to begin with, they are just wrong. Get the correct bolts
#19
Sprocket
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Great on Injection faults
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Posted 10 August 2009 - 10:14 PM
Oh, and the crank should only flex as much as the bearings will allow, which in my case was a good 1mm+ LMFAO
#20
haz
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Super Mini Mad
- Location: Southport
Posted 11 August 2009 - 11:46 AM
Ok cheers sproket
If my rods are slightly different from the standard S rods, then surely i'll never get the correct after market bolts? Suppose I'll just get some more and see how they fit and if they dont then I have no choice but to grind them. As long as I take it easy and dont heat them cherry red whilst grinding (and thus anneal - or quench & case harden) and aslong as i dont score the shank, the stress points I may induce will be beyond the active grip of the nut... or am i missing something?
If my rods are slightly different from the standard S rods, then surely i'll never get the correct after market bolts? Suppose I'll just get some more and see how they fit and if they dont then I have no choice but to grind them. As long as I take it easy and dont heat them cherry red whilst grinding (and thus anneal - or quench & case harden) and aslong as i dont score the shank, the stress points I may induce will be beyond the active grip of the nut... or am i missing something?
#21
haz
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Super Mini Mad
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Posted 11 August 2009 - 12:05 PM
just ordered these http://images.minisp...uk/206-6001.jpg
From memory they look to have significantly less thread than the ones i currently have fitted, light at the end of the tunnel perhaps!
just for reference... minispares 'arp' rod bolts look to be knock off bolts as they dont come with assy lube or in the ARP box - and they dont have s-bolts on their site - I no doubt ordered them over the phone in a bulk order and received 1275 ones as a result. Oh, and minisport sell them for about £30 more than everyone else.
From memory they look to have significantly less thread than the ones i currently have fitted, light at the end of the tunnel perhaps!
just for reference... minispares 'arp' rod bolts look to be knock off bolts as they dont come with assy lube or in the ARP box - and they dont have s-bolts on their site - I no doubt ordered them over the phone in a bulk order and received 1275 ones as a result. Oh, and minisport sell them for about £30 more than everyone else.
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