Race motor

[maytag]

My comparison was between an OEM part and a lightened one. The lightening profile was what most seem to consider "knife edging" I do not think a blunt or sharp edge makes a considerable difference. I have seen some OEM crankshafts on other cars that have angled rather than blunt edges.. who knows!

I would suspect then that you and I are talking about the same thing. And I am an absolute believer in lightening cranks.

"Knife-edging" (at least in all of the circles I've ever run in) refers specifically to changing the shape of the leading-edge of the counterweights (and in extreme cases, even the throws) to a 'sharpened' edge, rather than a blunt edge. It is this practice that I am discouraging.

Having said that, my guess is that since the Fiat TC is, as you say, a single-plane crank, there are likely no counterweights to begin with ( I haven't actually had mine open yet) which would make "knife-edging" impossible in the first place.

[Zmatt]

To the op, I just finished making all of Turbo 124.com hate me after researching how cost effective an engine build is. My conclusion is a 4a-ge swap will be cheaper and will be easier to live with. A 20v will get you 150-160hp stock depending on if its a blacktop or silver top, and you can tune them to 180 without too much trouble, but my Toyota expert friend tells me that after 180 things get expensive. Even then 180hp is a lot for the little fiat. if you get a mk2 or mk3 supra rear end and a T50 transmission to go with it, a few weeks worth of fab work should get it puttering along. At least this is the conclusion that I have come to after reading a lot and asking a lot of informed people. My advantage here is that I have a good friend who has restored 8 mk1 MR2s, daily drives another and races an AE86, so he knows the 4A-GE and everything that goes with it very well. You may not be as fortunate.

[DriftFiat]

Thankjs when i say (knife-edgeing) i do mean lightening the crank thanks for your posts. So is it safe for these engines to run at 18 for extended periods of time or should i shoot for something like 15psi? Could I get 300hp out of this little motor?
And someone mentioned orings on the carbs how do you o-ring a carb?

[pastaroni34]

I think 18 psi is completely fine. Again, assuming no detonation.

You're going to need a lot more to get to 300hp though. 18psi will generate 240hp, assuming you're fairly efficient.

I have no idea how well a this would work with carbs.

[DriftFiat]

I remember seeing a 240z that had a twin turbo with the three solex carbs but i cant find any info on it. What all would be involved in taking the motor to 25psi?

[pastaroni34]

25psi would mean you would have to have an intercooler. Preferrably o-ring the block, forged pistons. You'll need ALOT of fuel too, I don't know if the carbs could keep up without modifying them. The absolute last thing you want is to go lean. I know a standard injection system would not have the capacity in both the fuel pump or the injectors. You'll also have to frankenstein some system to control your ignition timing. Its also likely the turbo you have will be more of a heat pump operating at 25psi and will be way inefficient.

[azygoustoyou]

I can't wait to see pic's of this engine

[manoa matt]

"I can't wait to see pic's of this engine" Don't hold your breath Brady. I'd rather see some pictures of the donor car's suspension points. Front crossmember,frame rails, and shock towers. Those will be the most important points on the car, if they are bad, find another car, or learn to weld.

These links may help:

http://cgi.ebay.com/ebaymotors/Fiat-124 ... ccessories

http://cgi.ebay.com/ebaymotors/Fiat-124 ... ccessories

http://cgi.ebay.com/ebaymotors/Fiat-124 ... ccessories

http://cgi.ebay.com/ebaymotors/Fiat-124 ... ccessories

[azygoustoyou]

Wow! I couldn't hold it that long anyways. Those are some cool turbo's. What kind of power would something like that add to the car. Now that's a wide price range. And I still like pic's

[DriftFiat]

all the crossmembers are good and rust free except for surface rust which is gone now. The car will have a rollcage the connects to the front strut tower through the firewall.The trans is what im worried about. I might get the gears shot peened and cross my fingers that that is enough. 300hp in this little car is going to be amazing. Would it be good to get the block bored or will the cylinder walls be to thin? As for lightening the crank would that lower the strength of the crank to the point that it wouldnt be able to take the abuse of the turbo. Also i am getting rid of the t3 im going for something alot bigger Any ideas for the turbo? and any ideas of what i will need to do to the carb ignition timing is definatly going to be scary one wrong move and this motors done.

[Zmatt]

Wow! I couldn't hold it that long anyways. Those are some cool turbo's. What kind of power would something like that add to the car. Now that's a wide price range. And I still like pic's

I think he is being sarcastic, all of those setups are missing crucial parts, and generally speaking ebay is a terrible place to buy turbo kits.

[azygoustoyou]

I know, there is a lot of people that don't know me well and I just like to have some fun. Turbos did look cool. I was thinking of Hal's car when I saw them. I like the idea of a turbo. Still have to learn myself. A lot of what you guys are talking about is foreign to me. Man I want to learn though. That's why I like pic's.

[htchevyii]

Wow! I couldn't hold it that long anyways. Those are some cool turbo's. What kind of power would something like that add to the car. Now that's a wide price range. And I still like pic's

I think he is being sarcastic, all of those setups are missing crucial parts, and generally speaking ebay is a terrible place to buy turbo kits.

I'd like to see how long those Chinease turbos last, but not on my car!

[E Prod Racer]

DriftFiat,
As the owner of a speed shop/dyno tuning shop specializing in roadracing NISSANs and Subarus, and as an active NASA competitor in a roadracing PT-A Spider 2000, I have some suggestions for you. You should build your Spider for the street, which is really the most fun you can have in a FIAT Spider, and spend your money on an SR20DET swap into your 240SX.

In addition to my Spider 200 racer, I also have an '89 240sx which has been converted into a dual purpose drift/time trial car with a 375RWHP SR20DET. The 240sx S13 chassis is almost too easy to drift, and the SR20 will provide enough power to make you look really good at drifting - great steering angle is stock, and the SR will EAT tires in a thick cloud of dense smoke... After spending 15 years and too much money on my Spider 2000 to get it to 200 HP, I can tell you that the 124 Spider platform will never make any kind of a successful drift car.

[Europa]

Nitrous has been used in drifting a driver named Ken Gushi used nitrous on his scion drift car for a while.

Scion drift car? Aren't Scion's FWD? Did someone modify a FWD to RWD for drifting? OR, is it that the Scion body was grafted to some other floor pan/frame? I am curious.

Found it!

http://www.youtube.com/watch?v=5Kaj0QyAUoo