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-   -   A special find in a 73"S" (http://forums.pelicanparts.com/911-engine-rebuilding-forum/867072-special-find-73-s.html)

xbrumossalesman 06-26-2015 09:56 AM

Quote:

Originally Posted by tdw28210 (Post 8682496)
I'm certainly no expert, but just wondering if this could have possibly been an IROC motor? I think they were 3.0 RS-based cars. The uniqueness of it would sort of make sense. From what I have researched, Roger Penske bought most of the IROC cars when Porsche ceased support of the series after the inaugural season. He then resold them to various race teams. Maybe Brumos bought one? Anyway, just a thought.

And BTW, beautiful build.

Don't remember Brumos buying one but Northlake P+A in suburban Atlanta sold the Beige Fittipaldi car 9114600100 -interesting read on GOOGLE about it with engine # but I'm not smart enough to add the link here- a little help ?

Henry Schmidt 06-26-2015 10:35 AM

Quote:

Originally Posted by tdw28210 (Post 8682496)
I'm certainly no expert, but just wondering if this could have possibly been an IROC motor? I think they were 3.0 RS-based cars. The uniqueness of it would sort of make sense. From what I have researched, Roger Penske bought most of the IROC cars when Porsche ceased support of the series after the inaugural season. He then resold them to various race teams. Maybe Brumos bought one? Anyway, just a thought.

And BTW, beautiful build.

My guess is that the race engine in the car was traded with the RS engine to make the tired out chassis street drivable.

KTL 06-26-2015 11:12 AM

Quote:

Originally Posted by Henry Schmidt (Post 8684396)
I generally use the squirter that seems horse power specific. This engine has turbo squirters.

SC squirter for under 260hp
Turbo squirter up to about 350
964 for 300 to 400 hp
There is an over-sided 964 squirter that is appropriate for higher heat engines.

Thanks for sharing that. Much appreciated!

I think the oversized 964 squirter is the one that was used in the 993 twin turbo engine?

SWS911 06-30-2015 04:37 AM

Henry, I noticed you are running pressure fed tensioners on this engine. I assumed you weren't a fan of these as you prefer the 930 tensioner. What gives?

Henry Schmidt 06-30-2015 05:29 AM

Quote:

Originally Posted by SWS911 (Post 8689777)
Henry, I noticed you are running pressure fed tensioners on this engine. I assumed you weren't a fan of these as you prefer the 930 tensioner. What gives?

Every engine project has it's own character. I prefer 930 tensioners with Supertec tensioners arm and chain savers whenever concurs aesthetics is appropriate or if the customers budget dictates.
In the case the engine had relatively new Carrera tensionsers so reusing them seemed appropriate. Whenever possible, I'm a fan of reusing components that offer reasonable serviceability as long as they don't represent an unreasonable compromise to my build.

Trackrash 10-11-2015 05:34 PM

What cams are being used?

Henry Schmidt 10-12-2015 05:34 AM

Quote:

Originally Posted by Trackrash (Post 8832094)
What cams are being used?

Dougherty Racing cams DC 62 with a 104 lobe center.

Fresh off the dyno.


http://forums.pelicanparts.com/uploa...1444656754.jpg
http://forums.pelicanparts.com/uploa...1444656772.png
http://forums.pelicanparts.com/uploa...1444656784.jpg
http://forums.pelicanparts.com/uploa...1444656794.png

al lkosmal 10-12-2015 06:13 AM

As usual, you set the bar high Henry....nice build.

regards,
al

Henry Schmidt 10-12-2015 06:46 AM

Quote:

Originally Posted by al lkosmal (Post 8832562)
As usual, you set the bar high Henry....nice build.

regards,
al

Thanks Al and all the rest of my Pelican friends who leave such nice compliments.

jpnovak 10-12-2015 07:56 AM

Henry, Great Build as usual. Thank you for continually sharing your special projects with us.

I am curious why there is such a significant increase in torque with the air filters on. These look like ITG filters. As far as I know the top surface is filter material, not hard. I am just trying to figure out what causes the increase in output. Is this an effect of engine break-in from successive runs? What are your thoughts?

Henry Schmidt 10-12-2015 10:44 AM

Quote:

Originally Posted by jpnovak (Post 8832700)
Henry, Great Build as usual. Thank you for continually sharing your special projects with us.

I am curious why there is such a significant increase in torque with the air filters on. These look like ITG filters. As far as I know the top surface is filter material, not hard. I am just trying to figure out what causes the increase in output. Is this an effect of engine break-in from successive runs? What are your thoughts?

I believe the theory is that a low restriction air filter helps to straighten out the air flow across the velocity stack promoting improved cylinder filling. We spent all day on the dyno so there could have been increased performance based on break in but Ron (the dyno guy) claims that air filters generate better numbers on most engines he tests.

MetalDoc 10-12-2015 08:03 PM

Henry,

I enjoy reading your updates on what you are up to. Thank you very much. Very impressive build and numbers to match.

Thanks, Paul

djpateman 10-15-2015 03:14 PM

Quote:

Originally Posted by xbrumossalesman (Post 8684632)
Don't remember Brumos buying one but Northlake P+A in suburban Atlanta sold the Beige Fittipaldi car 9114600100 -interesting read on GOOGLE about it with engine #

http://cr-pca.org/NewsDates/TRArchive/2012_01_TR.pdf


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