New Cams available for 32v 928

  • Carl Fausett
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18 Jul 2012 10:45 #9807 by Carl Fausett
New Cams available for 32v 928 was created by Carl Fausett
We have just added a new camshaft profile to those we already offer for the 32v 928 here: www.928motorsports.com/parts/camshafts.php

We did a straight-up comparison to our previous most powerful camshaft grind, the 928MS 32vR3. Using the same engine, car, fuel and boost (12.5 lbs) - no other changes were made. Only the intake camshaft was changed.

I always felt that the valve overlap of our 32vR3 camshaft might be too agressive for a boosted engine, and so we set ourselves to develop a "big dog" camshaft just for boosted engines, the new 32vR4.

Compared to the R3, the new R4 cam has less lift, longer duration, and we took out 7 degrees of valve overlap.

The engine is much happier with this grind. It starts faster, idles better, and has a very linear power curve making for non-stop push-you-back-in-your-seat acceleration. Its a joy to drive - good power everywhere.

As the comparison chart below shows - if bottom and mid-range were your goal, and if you were naturally aspirated - the R3 cam might still be the right choice. We are recommending the new R4 grind for boosted cars, or those who want more power up top.

Complete details here:
www.928motorsports.com/parts/camshafts.php

Attached files [img]media/attachments/10101=1167-2012-07-12 17.30.29 (Medium).jpg[/img] [img]media/attachments/10101=1166-6.5L Road Race Tune camshafts compared (Large).jpg[/img] [img]media/attachments/10101=1165-6.5L Road Race Tune new R4 camshafts (Medium).jpg[/img]

Carl Fausett
Phone: 920-485-0928
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: www.928motorsports.com

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19 Jul 2012 01:00 #9824 by 928mac
Replied by 928mac on topic New Cams available for 32v 928
Hey Carl I saw your thread on RL but never had a chance to ask how you thought these cams would compare to GT cams. What would The difference of Power be on a stock 89 with GT cams or with your cams.
aprox HP and snappiness

also is there a guarantee against pitting, 1 yr, 3 yr, 5 yr ???

Thanks

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19 Jul 2012 08:49 #9825 by Carl Fausett
Replied by Carl Fausett on topic New Cams available for 32v 928
Looking at our comparison chart here:
www.928motorsports.com/parts/camshafts.php

If we compare the R4 cams to the GT cams, you'll see 19 degrees more lift and 3 degrees more duration on the Intake. In short, I think the R4 would be a nice step to teh stock GT cams.

As always, one must be certain that you have the valve-to-piston clearance to run the higher lift.

The guarantee on camshafts is this:

928 Motorsports, LLC® warrants these hard-welded camshafts against excessive cam lobe wear for a period of 1 year from date of purchase. This warranty covers cam lobe wear only and does not cover breakage, lifters or any other engine parts. This warranty does not cover abnormal wear due to insufficient lubrication, excessive engine heat, valve spring coil bind and cylinder head or guide interference. In no event shall 928 Motorsports, LLC® be liable for labor or service charges or damage to other engine parts from the use or misuse of these camshafts. The "Camshaft Installation Requirements" (below) must be followed for warranty to remain in force. Should your cam lobes wear excessively during the warranty period, return them to 928 Motorsports LLC® with proof of purchase. 928 Motorsports LLC® will inspect your cam and repair or replace (at our discretion), under the terms of the warranty, at a cost not to exceed 50% of list price plus freight.


Carl Fausett
Phone: 920-485-0928
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: www.928motorsports.com

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