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Highlander
tinkerer


Joined: 17 Aug 2003
Posts: 161

PostPosted: Mon Nov 10, 2003 2:10 am    Post subject: big valve head Reply with quote

ok ive just read all the crapola on big valve heads and stamped numbers and isuzu symbols etc i wanna skip all that and just find out the measurement of the big valves as opposed to the small ones (to the nearest mm if possible)

cheers
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TXcoupe
petrol head


Joined: 05 Oct 2001
Posts: 1675

PostPosted: Mon Nov 10, 2003 8:13 pm    Post subject: Re: big valve head Reply with quote

inlet 42mm
exhuast 34mm
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MadWagon
tinkerer


Joined: 08 Sep 2003
Posts: 67

PostPosted: Mon Nov 10, 2003 9:52 pm    Post subject: Re: big valve head Reply with quote

i just got my self a tx big valver, wonderin if you notice any power difference? and i thought there was only 2 MM difference between inlet and out.
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Sprocket
rice boy


Joined: 10 Nov 2003
Posts: 21
Location: Griffith , N.S.W

PostPosted: Mon Nov 10, 2003 11:05 pm    Post subject: Re: big valve head Reply with quote

can also run bigger valves out of the 4ze1 in the large valve head .. length is different but overcomable by running nissan caps can also use ducatti valve spring adjusters ( ball raced )ford pre-crossflow valve springs with gem inners r excellent springs good tension ..valve part numbers- inlet part no.rs6051 exhaust part no-rk8050 repco part numbers .. little machining is required ..I've onle built one of these heads works well
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MadWagon
tinkerer


Joined: 08 Sep 2003
Posts: 67

PostPosted: Tue Nov 11, 2003 9:18 pm    Post subject: Re: big valve head Reply with quote

cheers ill ask around about this.
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