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Home > General Chat > Crankshaft hitting something on rebuild

Turbo Tel

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1060 Posts
Member #: 588
Post Whore

Delaware, USA

13th Mar, 2007 at 02:14:17pm

During my engine rebuild I had just mounted the gearbox and I spun the crank to check all was well, it wasn't despite doing a dry fit. After I torqued it down I was just hitting something Grrrr..I thought, the central pickup.. and then it cleared.

When I split it again I realised that it could not be the pickup so I kept scratching my head and eventually realised that it was a bigend bolt JUST tapping a camshaft lobe... Because I had not installed the timing chain yet the cam was in wierd positions and it could hit

So if you feel a slight restriction, spin the cam.....

Edited by Turbo Tel on 13th Mar, 2007.

website:- http://www.terryhunt.co.uk


miniminor63

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1849 Posts
Member #: 672
The oversills police

Oslo, Norway

13th Mar, 2007 at 02:36:36pm

this is why you have to use S rods or short stroke or similar when you build a 8 port engine with push rods:)

Turbo Tel

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1060 Posts
Member #: 588
Post Whore

Delaware, USA

13th Mar, 2007 at 02:39:14pm

Is that because the cam timing is so different that the lobes interfere??

Terry

website:- http://www.terryhunt.co.uk


Vegard

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7765 Posts
Member #: 74
I pick holes in everything..

Chief ancient post excavator

Norway

13th Mar, 2007 at 02:41:35pm

5 port head EIIEEIIE
8 port head IEIEIEIE

Exhaust and inlet that is. That means some cam lobes are in a totally different place.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.
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