Mike - So would that be the 1.4" intakes?
I'll need to check with my local machine shop whether there's enough width in
my inserts to accommodate the bigger valves, but I was thinking 1.4" inlets and
maybe standard or 1.215" exhausts. If the inserts are too narrow, I may be
forced to stick with stock sized valves. Also, I've already completed the
basic porting as described in Vizard (cleaned up the chamber and reprofiled the
area around the guides).
I also have a 1 3/4" HIF44, the Titan manifold and Maniflow exhaust header, so
I'm expecting some reasonable gains over the 1098 I'm running now.
What needle do you plan to start with?
Phil
|-----Original Message-----
|From: Mike MacLean [mailto:macleans@earthlink.net]
|Sent: Friday, April 18, 2003 12:57 PM
|To: Phil Profili
|Cc: Spridget List
|Subject: Re: Valves - are the expensive ones worth it?
|
|
|Phil,
| I am in the middle of building a 1275 head also. I only
|live about 5 minutes away from APT and have been over there
|numerous times to talk to David Anton. He says, if you only
|put Rimflo valves in there and use a larger intake only you
|will flow a tremendous amount more air
|than stock. This is if you do not even do any grinding as in
|Vizard's book. I will be using 1.5 rockers and a 266 cam with
|the one size larger intake Rimflo and normal size Rimflo
|exhaust. I will also be using a single HIF 1 3/4 inch carb
|and exhaust header. David said he has
|seen as much a 100 horsepower with this setup! This is still
|a tractable street motor. As far as springs go, just use the
|normal cheap double spring set and you will be fine.
|Mike MacLean-60 Sprite
|
|Phil Profili wrote:
|
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