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RE: dyno time!

To: "Roadster List" <datsun-roadsters@Autox.Team.Net>
Subject: RE: dyno time!
From: "Gordon Glasgow" <gsglasgow@comcast.net>
Date: Tue, 12 Oct 2004 18:01:09 -0700
At 500 miles, your rings might not be completely seated yet.

> -----Original Message-----
> From: owner-datsun-roadsters@Autox.Team.Net
> [mailto:owner-datsun-roadsters@Autox.Team.Net]On Behalf Of
> JOver4X4@aol.com
> Sent: Tuesday, October 12, 2004 4:22 PM
> To: "Tom @ Datsun2000"; neffster189@adelphia.net; "Roadster Listgroup"
> Subject: RE: dyno time!
> 
> 
> I have been thinking about Dan's interesting question.  Why did 
> my car only show a few horsepower more than Tom Hoagland's A 
> cammed Solex engine?
> I am driving a 6 blade plastic fan.  I am not running an MSD 
> ignition.  My engine is very fresh, 500 miles, old Solexs and a B 
> cam. (will I see more power when the bearings wear in a little? I 
> don't think substantially)  Does gear ratio play a role in torque 
> or HP readings on the dyno?  I am also running 34mm chokes to 
> help midrange torque.  (I think Tom is too) I did try to bump my 
> timing to 25 degrees initial advance and it leaned out the 
> mixture quite a bit.  Even with a bump in the main jet size to 
> 140 from my normal 135.  I guess I could bump the timing to 25 
> deg. initial advance again and try to add even more fuel, 145 
> mains?  I think at this altitude and less than 10:1 compression I 
> could handle 25 deg. initial advance if I added fuel to 
> compensate for leaning of the mixture.  Any other ideas?  My 
> engine is .040 over, balanced with a 15 lb steel flywheel.  I 
> match ported all runners and am not running an air cleaner at the 
> moment.  I think I should be seeing more than!
>  135 corrected horsepower too.  I am happy though that the car 
> runs good and pulls nicely from 2700-6000 rpm.  After that I 
> think the 34 chokes restrict any further top end performance.  
> Does anyone else have an idea to help bump my dyno readings?  It 
> is not that I am unhappy, but, if there is more HP to be had with 
> minor tweaking I am all over it.
> Just pondering,
> John Over68 2000wycroc






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