308 Turbo Mod

Well, it looks awesome. I'll actually have the funds to purchase a 308 next year, and that kind of conversion would really be fun. I am REALLY ITCHING now to buy a ferrari. I saw one on cars.com that is white and black (83 qv). I wonder if I could do some conversion work on it to make it look like the one in this thread. Bumper removal and euro spoiler possible?

Thanks,
cpa

 

I realy love the look of that car... Simply amazing, still today a true masterpiece when not spoiled by ugly bumpers.
ciao
Eugenio

 

Interesting NACA ducts, just like the 208 cars. How did you do that? Is that something that any good body shop can do?

This whole project is fascinating to me. Nothing's hacked up; nothing's really out of whack. It looks very clean, very efficient, and very effective.

 

Quite nice indeed - answers all of my questions.
All in all a very simple elegant well done piece of kit, very few pieces.
Just super - great engineering is always ultimately simply elegant in execution.

 

YEP pretty to look at indeed

 

I just removed the CIS unit from my car as is pictured above. That sucker is HEAVY. Why is the Bottom of that thing a 1/4" thick aluminum casting? You could use that thing as an engine mount. Why so stout? I was wondering as I hefted it out of the car if a simple plastic or fiberglass piece would work as well, and if so, why wouldn't someone make one to shed a few pounds. It is probably an off the shelf Bosch item that Ferrari used, but still, why did Bosch think it needed to be so rugged? It seems well suited for a tankish 1970's Mercedes sedan, but really out of place on a sports car of any kind.

So appparently you are proving it doesn't need to be so thick and heavy afterall.

 

Steve, any clues on how to achieve fuel enrichment tied to boost?

Very simple and elegant solution.

TIA, Peter (installed BAE kits twenty-five years ago on 2V injected cars, those were the days!)

 

Don't know if this is applicable, but I've seen those variable fuel pressure regulators tied to MAP that are designed for K-jet turbo applications in the Porsche mag, excellence. Would those work?

I think you guys have a very nice and clean small turbo set up.

 

OBTW
I see you still have the vacuum lines coming off the plenum. How did you handle the vacuum advance to the ignition module and brake booster?
I don't see how the warm up bleed air system would work as it would be reverse flow under boost when cold - would love to hear the solutions.

Again, a terrific bit of cost-effective kit with good result.

 

don't use a RRP, the WUR that ferrari used on the CIS is already designed to handle vacumm/boost applications. i'm running 10~12lbs of boost on the stock CIS with no problems.

FI engines will not produce boost without load, so at idle or in nuetral the warm-up cylce is still working. you'll only get boost under load at speed somewhere around 3krpm, by then it should be warmed up and the vacumm needed for other operations isn't needed.

 

you're doing a draw thru vs a blow thru. on mine i went with a blow thru on the CIS and noticed a pecular thing, no lag. then i figured out why, as the throttle closes the CIS plate also closes and the BOV on mine is before the CIS so i can purge unmeetered air. now when this happens the air between the CIS plate and the throttle is still 'charged'. opening the throttle and the 'charged' air enters manifold and the charger can continue to build boost with out lag.

about the only benifit i could find, that and my location worked easier with a blowthru approach. reading up on the novitec 360 they also imploy a valved chamber to remove lag. so it goes to show with proper layout the CIS works great with boost.

 

If I saw that in my rear view mirror, I'd move to the right and let him pass!

 

Is there an off the shelf intercooler that will work or would you have to make your own? I have heard that heater cores could be used to fabricate efficient intercoolers.

Which produces higher discharge temperatures, superchargers or turbos?

 

Turbos definetely but instead of rooting around making up an intercooler, for this application water injection into the intake would be the go.
Huge reductions in intake temps and whats it made of.... 2 parts oxygen.
i have used these applications very successfully in the past and once i had the system operational I used straight alcohol to cool and fatten the mixture up a lil.

 

Those two oxygen atons are incredibly happy being attached to a hydrogen atom. Removing them from the H takes a lot of energy. They are not going to be of any help for your combustion process. That water molecule will go in as H2O and come out as H2O. The only thing it will do is absorb a whole bunch of heat turning from liquid to gas (steam). That heat absorbtion is your friend. Those two Os are just along for the ride.

 

The other thig it does when turning to steam is take up space in the cylinder, al lot of it...leaving less space for air (containing O2). An intercooler is a better way to go, but water/alcohol injection is cheaper and easier. I always feared the tank running dry, causing the engine to explode, so I've stayed away from it.