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10431
Fri May 28, 2004 11:58 am
Derbyshire
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
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96
Thu Apr 14, 2005 10:31 am
Melbourne , Australia
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251
Thu Jul 01, 2004 1:04 pm
Brisbane Australia
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
chris wrote:David do you think its worthwhile changing to the bigger valves in my ATMO with my multi throttle bodies and long duration cams . Do the A610 valves fit with machining, I intend on fitting double valve springs.
Are the standard pistons ok.
Chris W
Non Member
3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
Alan Moore wrote:I have fitted the larger valves to my turbo heads and found that the valves were virtually as big as the valve seat inserts. So I fitted larger valve seat inserts to both the inlet and exhaust valves. Also when porting I took quite a bit of the large boss that supports the valve guide in the exhaust port away.
There is not much spare material in the exhaust ports before you hit water, except where the boss is. In the turbo heads at least, the inlet ports are fine and only need cleaning up.
Surprisingly the conrods are identical between the GTA Turbo and the Volvo B280F I stripped.
David,
Do you know the sizes of the turbo housings on the A610?
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