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Bill Verburg's Avatar
 
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Originally Posted by ninesixfour View Post
Megaphones are just hollow tubes, no muffling.
Nope, megaphones are shaped, the taper and length and whether or not there is a reverse cone and the geometry of the cone end are all critical factors. Same thing w/ the merge collectors where the angle and length of the merges can make a big difference.

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Bill Verburg
'76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone)
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Old 11-15-2009, 04:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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What do you think?

How about taking weight off the crankshaft somewhere?
The comment above that the Carrera 3.0 w/ the 6 bolt crank had more HP because it had a lighter crank Than the 9 bolt SC, made a lot of sense.
Could an SC have some pork in the crank? And where to remove it?
Thanks Mark
Old 11-16-2009, 04:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
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Originally Posted by javaschlava View Post
How about taking weight off the crankshaft somewhere?
The comment above that the Carrera 3.0 w/ the 6 bolt crank had more HP because it had a lighter crank Than the 9 bolt SC, made a lot of sense.
Could an SC have some pork in the crank? And where to remove it?
Thanks Mark
A lighter crank doesn't make hp which is measured at a constant rpm. It does allow freer reving. The difference in hp between the C3 and early SC was all freer flow exhaust, ignition and fuel maps
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Bill Verburg
'76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone)
| Pelican Home |Rennlist Wheels |Rennlist Brakes |
Old 11-17-2009, 02:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
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Quote:
Originally Posted by javaschlava View Post
How about taking weight off the crankshaft somewhere?
The comment above that the Carrera 3.0 w/ the 6 bolt crank had more HP because it had a lighter crank Than the 9 bolt SC, made a lot of sense.
Could an SC have some pork in the crank? And where to remove it?
Thanks Mark
This wouldn't be allowed in a PCA stock class race car anyway.

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Old 11-18-2009, 08:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #24 (permalink)
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