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DGriz's Avatar
 
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3.0 - Reliable acceleration additions?

I think that an SC with a 3.0 engine is plenty fast, but of course I can't help but think about making it faster...

In reviewing past web discussions, my impression is that to add true "seat of the pants" reliable improvements in acceleration one should consider 1. Adding SSIs and 2. Swapping the 915 ring & pinion to a 7.31 unit like early transmissions.

I'm not going to make an engine swap, add a turbo, or crack open the engine for better cams & pistons. And this won't be a track car.

Are the above past recommendations still suggested? And do you think they are really worth the estimated $3800 in parts cost?

Thanks! Dickson

Old 08-08-2013, 02:27 PM
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ssi and a good sport exhaust like m&k is an awsome upgrade.do it and youll be glade.my car feel faster revs up quiker and sound amazing.
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Old 08-08-2013, 02:48 PM
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Smaller tyres, at the expense of economy , not a word I use in conjunction with "sc"
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'81 924 , '85 944 , '78 911SC , '82 928 5.0L
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Old 08-08-2013, 03:21 PM
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Lightweight flywheel & clutch package?
Old 08-08-2013, 03:27 PM
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Free - loose weight (the car, not you ;-) )

Spend your money on suspension bits.

Todd
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'81 SC
Old 08-08-2013, 03:47 PM
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Cam timing can be tweaked to give a bit more squirt at low end in exchange for running out of breath at high end quicker.

Don't know if this can be done with engine in car. Kind of doubt it.
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Old 08-08-2013, 04:16 PM
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Quote:
Originally Posted by toddu View Post
Free - loose weight (the car, not you ;-) )

Spend your money on suspension bits.

Todd
+1

Loose weight the car and you, it is the least expensive way to go faster!
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Lucky owner of a couple of 911’s and a 924
Old 08-08-2013, 05:47 PM
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Recurve distributor to RoW specs
Old 08-08-2013, 06:43 PM
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I think you're right with the "lose weight" suggestion!

I'm signed up to bike a metric century ride (62 miles) in Grand Junction CO on October 5th. http://http://www.tourofthemoon.com/

We will climb about 3600 feet over that long ride....I am trying to lose 20 lbs by then....That much less to pull up the hills!
Old 08-08-2013, 07:58 PM
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Join Date: Nov 2010
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Quote:
Originally Posted by DGriz View Post
I think that an SC with a 3.0 engine is plenty fast, but of course I can't help but think about making it faster...

In reviewing past web discussions, my impression is that to add true "seat of the pants" reliable improvements in acceleration one should consider 1. Adding SSIs and 2. Swapping the 915 ring & pinion to a 7.31 unit like early transmissions.

I'm not going to make an engine swap, add a turbo, or crack open the engine for better cams & pistons. And this won't be a track car.

Are the above past recommendations still suggested? And do you think they are really worth the estimated $3800 in parts cost?

Thanks! Dickson
Pull the 3.0L and put it in a 914!!
Old 08-08-2013, 08:00 PM
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Quote:
Originally Posted by toddu View Post
Free - loose weight (the car, not you ;-) )

Spend your money on suspension bits.

Todd
both...lose weight...win/win
Old 08-08-2013, 08:03 PM
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Join Date: Nov 2010
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Quote:
Originally Posted by DGriz View Post
I think that an SC with a 3.0 engine is plenty fast, but of course I can't help but think about making it faster...

In reviewing past web discussions, my impression is that to add true "seat of the pants" reliable improvements in acceleration one should consider 1. Adding SSIs and 2. Swapping the 915 ring & pinion to a 7.31 unit like early transmissions.

I'm not going to make an engine swap, add a turbo, or crack open the engine for better cams & pistons. And this won't be a track car.

Are the above past recommendations still suggested? And do you think they are really worth the estimated $3800 in parts cost?

Thanks! Dickson
Pull the 3.0L and put it in a 914!! I know you said no engine swap but how about a body swap!!??

Old 08-08-2013, 08:04 PM
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I would not mess with the final drive ratio. It changes the car's "long legs" at higher speed. Only time when I feel the old ratio makes sense, is if you are a competitve autocrosser.

Instead put 964 cams (or similar) in conjunction with SSI. Also make sure you get the most out of your distributor timing.

Replacing cams is not more complicated than swapping out ring & pinion.

G

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Old 08-08-2013, 09:56 PM
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