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whackit's Avatar
 
Join Date: Jan 2005
Location: Los Angeles CA
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Cast Iron Cylinder reuse & cam questions.

Hello.

I am about to rebuild my leaky 71 2.2 t motor and am considering stroking to 2.4 and swapping the cam. I have a couple of questions and have done quite a bit of research but am just soliciting some more opinions. I am looking for good street performance. Not a track car. Something with decent low end torque and power throughout the rpm range. I don't want a tweaky high performance motor. Just a great driver with more getup and go than the T has now. It will be driven infrequently, a weekend driver. I have had this car for 20 years and love it and want to give it the best as I plan to have it for the rest of my life.

Here are my plans.

Full rebuild. Stroke to 2.4 L with 2.7 crank. JE pistons in the 9.5:1 range. PMO carbs. MSD Ignition.

I've gotten mixed opinions on whether to reuse or not reuse the cast iron cylinders. I have heard good things about the LN Engineering's "Nickies" but would rather not drop 3500 on P & C's if I don't have to.

Cam Cam Cam. Many opinions on this. Most seem to say that a E cam is my best bet, some others say the S cam. What do you think based on what I said above?

Thanks for everyones help.

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Old 02-27-2005, 04:23 PM
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What RPM band do you want? The E will be good for off idle to 6000 and the S cam is 4500 and up.
The camshaft and compression ratio need to be matched, E cams with 9-1 and the S cams slightly more at 9.5-1.
There are other cam options in between the E and S cams.
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John Dougherty
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Old 02-27-2005, 06:46 PM
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Cool

You might look at 2.2 pistons. This would raise the cr quite a bit over the 2.4 stock cr. BTW, the 2.2E pistons used to come in an oversize.

Good luck,
David Duffield
Old 02-27-2005, 07:27 PM
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I'm not aware of any reasons not to reuse your iron cylinders except for the relatively small difference in weight -- which isn't a big deal for your application.
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'69 911E

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Old 02-28-2005, 02:32 AM
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I would imagine the cast iron cylinders are less able to release their heat, and run hotter than aluminum counterparts. However, this might not be a problem area.
Old 02-28-2005, 04:24 AM
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More cubic inches/centimeters = HP/TQ. Build the largest platform that your budget allows for.

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Old 02-28-2005, 05:10 AM
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