Pelican Parts Forums - 3.8 Conversion

Pelican Parts Forums (http://forums.pelicanparts.com/)

- Porsche 911 Technical Forum (http://forums.pelicanparts.com/porsche-911-technical-forum/)

- - 3.8 Conversion (http://forums.pelicanparts.com/porsche-911-technical-forum/126933-3-8-conversion.html)

Please stop posting pr0n - this is a family board!

Quote:

Originally posted by Bill Verburg

http://forums.pelicanparts.com/uploa..._006_small.jpg

Quote:

Originally posted by Bill Verburg
I've got a 3.8 993RS conversion in my '76 Carrera. There are several ways to do this and several optional paths along the way it sort of depends on the intended purpose.

When I started looking in to this Joel Resier had 2 ex Daytona 3.8 RSR engines @ ~ $30k great engines but not suitable for the street. Dave Valliere had several 964 and 993RS @~$20-25K but there was no real documentation and there were some issues with missing pieces.

That left either doing a 964 as a 3.8 vram which is being done by one of us who may wish to remain anonymous, or a '95 993 to 3.8, or '96 on 993 to 3.8 I chose to by a '97 euro 993 and have it totaly rebuilt to RS spec

Here is a rough cost outline
engine ~$10k for a euro vram

p/c ~$6.5k for RSR or ~$4k for RS

cams and cam drive~$1k

Bill,

What type of intake do you have. And how much $$ less would it be to take a 1995 3.6 and put sport cams, RS valve springs,& retainers & etc rather than the full blown 3.8 conversion.

Also, nice exhaust system.

valves ~$100 ea x 6

the rest is standard rebuild parts, rod bolts gaskets, chain, head studs etc ~$2k

custom chip/dyno time ~$5-900

lots of little labor intensive machine/prep work

By careful shopping you can get much better pricing than above, In all cases I paid a little to a lot less but those are the listed prices.

For a street car vram is definitely worth it, for a race car I would start w/ a '95 993

The RS 102/107s are fine for street use, but you will want the 102/109 RSRs for a race car. There are other versions of aftermarket p/c available up to 4.2 liters but the cost would make your eyes pop out.

The result is an easy 300+ hp and a ton of toque, both 275/40 can all too easily be lit up in the lower gears.

Please note that a stock 964 is perfectly compatible w/ stock 911 gearing tires and brakes, ALL of these will need suitable mods w/ the 3.8 it is in a whole different ball park.
http://forums.pelicanparts.com/uploa..._006_small.jpg
http://forums.pelicanparts.com/uploa..._008_small.jpg

Sound bite

Bill,

What do you have for an intake. And how much less$$ would it be to take a 1995 3.6 and do an upper end conversion rather than a full blown 3.8 RS? eg. sport cams, RS valve springs, retainera,& etc.

A really nice mod is the 993ss cams on a 964 or '95 993. It's relatively cheap, I would do bigger valves and new guides etc at the same time which will increase the cost but also eliminate a big headache in these late engines(soft guides). This can all be done for ~$2-3k depending on who does the work.

You will net a bit less that 300hp and the extra torque (which is the nicest part of big displacement) will not be there but it will be a lot of bang for the buck. Be sure to upgrade headers & chip at the same time.

Mine is just the stock vram intake.

Bill:

Your car looks great. How come you went with an airbox instead of a cone airfilter?

Lew

1)I don't feel that the aftermarket cones doa s good a job of filtering

2)Even if the cone filter ok I don't like the mess of cleaning and reoiling as opposed to just popping a new clean filter element in place

3)A cold air intake will be easier to fab.

OK, am I the only one who thinks it's insane to put $25k in an engine for 340HP?

Unless, of course, you have money to burn...

BTW I think it's great that you have a 3.8 in your 911, and I'd LOVE to have one in my SC, but I just couldn't put that type of money into an engine...

Schuey, If you want logical buy a Honda Civic

I built my car for me, and I am the only one that needs to be happy

and I am :D

Bill,
if you built your car for me...I WOULD BE HAPPY!

The only other car that I have ever had as much fun w/ is a 427 Cobra. there is a lot to be said for overpowered N/A cars.

I have also driven overpowered turbos, but it's just not the same

Cams. compression and displacement do it for me.

Quote:

Originally posted by Schuey
OK, am I the only one who thinks it's insane to put $25k in an engine for 340HP?

<br>
It is insane but isn't any hobby if you are really into it? It's kinda like those damn dry roasted peanuts, I always think I just need a handful and before you know it I am out of Coke and peanuts!