Fellow Turbo nutters, what do you make of this?

[stevieturbo]

splatspeed said:

for 7 psi it is perfectly ok

it is only when you try to run much higher boosts you get into problem

however as it is a NA engine to run the higher boosts you really need the engine out to increase the cumbustion chamber

this only takes an afternoon to fit and if it wasn't for the noise level i would consider the package however no silencers is a real issue for track use

plus i only want 7 psi anyway as i want to use gas

You will find there are plenty of people running 10-12psi, and a small few even higher with similar setups. It may be pushing things a little, but there are many ways to achieve it, without delving into the engine itself.
And as Mike says, there are dozens of cylinder head arrangements you can use, to give drops in CR, for even more boost if required.

But dont get hung up on boost.....its only really a measure of restriction. Id rather make huge amounts of power with little boost, than lesser power with lots of boost.

As for noise.....dont forget, the turbocharger itself will massively reduce any exhaust noise, even more so when placed so far back. And there is no reason why a silencer couldnt be added after the turbocharger. All you need is some room.

[splatspeed]

boosted ls1 said:

Splatspeed said

"however as it is a NA engine to run the higher boosts you really need the engine out to increase the cumbustion chamber".

You don't have to do this. It's quite common to fit large chambered 317 heads or the cam could be changed giving a lower DCR. If fitting forged pistons you might need to remove the engine depending on the vehicle. Stock pistons seem reasonably up to the job so long as you avoid detonation.

Boosted.

if doing 1 head i usually leave the engine in the car

with a v i take the engine out and work on the bench

plus these engines are not small so i like to be able to get around them and take my time do all the work i want and place it back

and yes i agree for sub 1 bar this seems a pretty good compromise but whn you approach 1 bar then it is starting to get to the point where the turbos near to the engine is the better option

the increasing of the combustion chamber allows you to get to the higher boost values

[chuntington101]

splatspeed, i think you can do a head swap on a LS engine with it in the car. and thats one of the good things about these kits, you dont need to move anything in the engine bay! and you can still change the plugs just as fast as you could on a stock car (they use stock manifolds).

this is just another option you can choose if you have one of these cars. there are lots of diffrent turbo setups, as said brofre, all with the possitive and negative points!

if you really want to look into these, in some cases very very effective and extreamly powerful, setups then have a look on the boards listed above. massive amounts of info on them both positive and negative.

thanks Chris.

PS, just saw a report on a new BMW M5 that was the first twin turbo in the world (acording to the mag)!!!! guess where the turbo where mounted????

..............in the back.