big valve head

Highlander · tinkerer Joined: 17 Aug 2003 Posts: 161

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

TXcoupe · petrol head Joined: 05 Oct 2001 Posts: 1675

inlet 42mm
exhuast 34mm

MadWagon · tinkerer Joined: 08 Sep 2003 Posts: 67

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.

Sprocket · Posted: Mon Nov 10, 2003 11:05 pm Post subject: Re: big valve head

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

MadWagon · tinkerer Joined: 08 Sep 2003 Posts: 67

cheers ill ask around about this.