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| Xflow |
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Age: 36 Posts: 721 Joined: 31st Dec 2005 Ride: EF V8 Futura, 180sx Location: Brisbane, Burpengary |
hey guys
mate got this engine(EB XR6) in shop and he looking for some over size valves to fit to his head before port and polishing. what size and brand do you guys recommend? i heard something about ford v8 valves are good but i find that hard to beleave. thx jason
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| dasmq |
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I think it is as big as you can go in a tickford head. but I could be wrong.
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| Xflow |
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Age: 36 Posts: 721 Joined: 31st Dec 2005 Ride: EF V8 Futura, 180sx Location: Brisbane, Burpengary |
you sure? i thought you could go bigger that than but hay you might be right hopefully find out soon
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| opto |
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You can put 351 C valves in but the valves have to be turned down on a lathe to the correct diameter.
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
the XR6 exhaust valve is plenty big enough and doesn't need changing.
as for the intake, you will not find an off the shelf valve to in the right size to fit. You'll only fit about 60thou larger in space there is and for that you need to modify a valve from a different engine or have some custom made |
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| Xflow |
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Age: 36 Posts: 721 Joined: 31st Dec 2005 Ride: EF V8 Futura, 180sx Location: Brisbane, Burpengary |
opto wrote: You can put 351 C valves in but the valves have to be turned down on a lathe to the correct diameter.
ill be darn lol the stem on the valve to thick? is what what you mean? they same lenght? they have 1 or 2 groves for the valve locks? one aint it? are they any larger? if so how much by?
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| cjh |
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The 351C valves will fit in the guides, but, they ( inlets ) are slightly longer than original valves. The 351C exhaust valves are shorter than the 4.0I6 ones.
Here are some pics to show. The Clevo ( 2V ) ones are on the left. Also are pics of the Clevo valves in the 4.0 I6 cyl head.
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| cjh |
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This is all 4 valves together, Clevo on the left.
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| Xflow |
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Age: 36 Posts: 721 Joined: 31st Dec 2005 Ride: EF V8 Futura, 180sx Location: Brisbane, Burpengary |
so can u still use the exhaust ones even knowing there shorter or just got to go with xr6 exhaust and 351 clev inlets
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| cjh |
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Xflow wrote: so can u still use the exhaust ones even knowing there shorter or just got to go with xr6 exhaust and 351 clev inlets
Did you notice the tip heights are different. The Clevo ones are higher. I don't know how far the hardness goes down on the tips of the Clevo valves.
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| Xflow |
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Age: 36 Posts: 721 Joined: 31st Dec 2005 Ride: EF V8 Futura, 180sx Location: Brisbane, Burpengary |
ow i see stupid me lol
just cut off the excessive grove and cut new grove lower down or just get a regrind cam and that should make up for shims lol just shim other side all good. just get some stainless steal valves or titanium.
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