RE: rocker arm ratio and cams

From: Wisotzkey, Rich (Rich.Wisotzkey@gd-wts.com)
Date: Fri Sep 28 2001 - 13:20:00 EDT


Aaron,
Your assumptions about the cam are correct. You'll be looking at no more
than 11" - 11.25" vacuum. If you don't have the computer custom reprogramed
(approx. $500), you won't be able to keep it running on the street, and
there are some computers that cannot be reprogramed.

I'm currently running the 1828 cam in my 318, but only after modifying the
computers MAP signal. It definetly doesn't have the characteristics of a
more traditional cam. At least in ways you might be accustomed to. (The
computer sees to that.)

Also, something to consider is emissions. I have another year before I'm
forced to take another emissions test. I'm hoping the 1828 will pass, but
at this point I don't know.

If you have any other questions about this cam, let me know.
Rich - Ashburn, VA

-----Original Message-----
From: Aaron Gasparich [mailto:acg302@ptd.net]
Sent: Friday, September 28, 2001 12:04 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: DML: rocker arm ratio and cams

what is the ratio of a stock rocker in a 97mpi 318. I'm goin with the hughes
1.6 rollers i think, but I would like to know if i have 1.5 or 1.6 stock.
I've heard both. if its 1.6 i just may consider the set of crower 1.7's a
little more(still way pricy) and i'm goin with the hughes HER1828AL cam.
Has anybody else here used that cam? and if so, how did it react with the
mpi and was it worth the purchase? I have a paranoia that the cams gonna
make to little vacum and screw things up. also will the 1.7s vs.s the 1.6
rockers cause other vacum problems
-Aaron



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