Turbo a good idea for auto-x/ road race?

[clill]

Originally Posted by 67goatman455

an eaton style is going to heat soak really bad. not very good for a road course i dont think

Stielow's last three cars were built with Eaton style superchargers and all work great on the road course.

For autocross you are fighting for every little inch. and I think any lag from a turbo will kill your times.

[67goatman455]

well, i guess a change to a N/A build is in order unfortunately. I have been very excited about the sound/ feel/ and fun of a turbo for a couple years now.

Maybe two small turbo's wouldn't be so bad with lag?

I dont really see the point of going with a super charger because it seems that it would be more cost effective to go N/A. Since this is my first build for road racing/ auto-x i dont want to dump a lot of money into something that i may not like on the track.

Hopefully i wont lose all my motivation because of this change

[camcojb]

Originally Posted by 67goatman455

well, i guess a change to a N/A build is in order unfortunately. I have been very excited about the sound/ feel/ and fun of a turbo for a couple years now.

Maybe two small turbo's wouldn't be so bad with lag?

I dont really see the point of going with a super charger because it seems that it would be more cost effective to go N/A. Since this is my first build for road racing/ auto-x i dont want to dump a lot of money into something that i may not like on the track.

Hopefully i wont lose all my motivation because of this change

N/A is the easiest way to go, especially for the above use, and trying to keep the cost down. Any forced induction adds significantly to the cost.

[67goatman455]

Originally Posted by camcojb

N/A is the easiest way to go, especially for the above use, and trying to keep the cost down. Any forced induction adds significantly to the cost.

My turbo build was actually going to be very cheap. I have almost eyerything i need.

I guess i'm looking for success storys of a single turbo before i start scrapping that idea and building a N/A motor

[Vegas69]

Autocross is all timing and making the fewest mistakes. Power that is not linear is a disadvantage. On a road course, the heat will creep up on you. 500hp is nothing to make naturally aspirated these days. GM has LS crate engines that do that.

[67goatman455]

Originally Posted by Vegas69

Autocross is all timing and making the fewest mistakes. Power that is not linear is a disadvantage. On a road course, the heat will creep up on you. 500hp is nothing to make naturally aspirated these days. GM has LS crate engines that do that.

very good points.

[Flash68]

Originally Posted by 67goatman455

My turbo build was actually going to be very cheap. I have almost eyerything i need.

I guess i'm looking for success storys of a single turbo before i start scrapping that idea and building a N/A motor

Whatever you do don't build a single turbo for what you are wanting to do.

It comes down to a twin turbo deal or NA. Single turbos are WAY too laggy. 2 smaller efficient turbos can be made to work, but as mentioned, you have to manage that heat.

I know lots of guys around here who track their twin turbo Porsches and from the factory smallish turbos it's a nice fairly linear power transition.

It depends on how serious you wanna get and how much you are really going to track it vs street drive it. Have to be honest with yourself and hopefully predict accurately how the car will be used. I say that because many of us change our usage after a car is built.

[67goatman455]

Originally Posted by Flash68

Whatever you do don't build a single turbo for what you are wanting to do.

It comes down to a twin turbo deal or NA. Single turbos are WAY too laggy. 2 smaller efficient turbos can be made to work, but as mentioned, you have to manage that heat.

I know lots of guys around here who track their twin turbo Porsches and from the factory smallish turbos it's a nice fairly linear power transition.

It depends on how serious you wanna get and how much you are really going to track it vs street drive it. Have to be honest with yourself and hopefully predict accurately how the car will be used. I say that because many of us change our usage after a car is built.

going to twin turbo jumps the cost up quickly. 2 wastegates, bov's, oil lines, more piping. just not an option i care to venture for.

I have finally started doing SCCA this year (only one event left till winter ) and i can say i am hooked already. The car will get driven as much as possible but the goal i have in mind is to be competitive on the track. And to one day be on the same track with some of the guys on this board!