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Re: H89 vs gx head

Subject: Re: H89 vs gx head
by D on 2019/5/17 8:49:49

H89 is the perfect head no need to spend money to get it to work
but it surprised me even that a rally crew 15 odd years ago wanted
to give me money a common round port head after coming over to buy
a set of 40mm dellortos saying the round port heads work best for
rally conditions or where all round (:>) performance was needed.
I gave it to the because they need bigger valves, careful porting
and basically alot more money than a H89 head off the bat.

Application was going to be around 1570cc A15 etc
At least some choices are available but for custom work you
need to know what a round port needs to get them to buggie.