Quick Question: TT engine in an SL

[lucifer's mechanic]

you can turbo charge your sl
all you have to do is change the compression
the sl is 10.5:1
the vr4 is 8.5:1
switch the sl pistons with vr4's
you will need new pistonrings to do this
and haed gasket
from there on you can grab a turbo kit

[Nater3kgtVR4]

lucifer's mechanic

you can turbo charge your sl
all you have to do is change the compression
the sl is 10.5:1
the vr4 is 8.5:1
switch the sl pistons with vr4's
you will need new pistonrings to do this
and haed gasket
from there on you can grab a turbo kit

Ok for starters the pistons you do have to change, but there are lots more parts to get.

just to name a few would be the big ones. Turbos, IC's, BOV, Intake Pipes, and lots of others. It's not an easy thing to do there is a lot to it, I know. I am close to completion in a complete engine rebuild of my VR4 and it is no joke (2-3 months). My Sl looks like a gocart engine compared to my VR4. If you do it take lots of pics and take it slow. It will be great when finished though. Here are some sites to check out for help on completeing it.

www.stealth316.com
and
www.3si.org

These two have all the info and links you can handle. Good Luck.

[bertzstealth]

Originally Posted by YogsVR4

A single vs multiple is a subjective choice. The VR4 uses a sequential turbo setting. The small one drives the big one so Turbo lag is quite short. A system that has two turbos (non sequential) will generally take longer to spool up then a single turbo of a larger size. Thats on of the reasons why you see a lot of supras converted over to a single turbo setup.

A single turbo setup can be considered better from an installation and maintenance standpoint. Its much easier to work with a single turbo setting then a dual one.

you obviously have no idea what you are talking about

vr4's are not sequential turbos, they are both the same size turbo and spool up the same... they are very small thats why spool time is so quick

and a non sequential system spools much faster than a sequential... the whole point of hte sequential is to keep the spool time longer, not quicker... a turbo will not help spool a bigger turbo... the engine see's all the air coming from each turbo.. being sequntial simply means the wastegates dont let all the exhaust get to one turbo to keep boost down then close when full boost is wanted

single turbos do not spool up faster than twins, twins spool faster... and the reason supras run singles is cuz they are an inline 6, not a v and its more benificial for them to run a single... singles produce less heat and are capable of more power, just lag bad

make sure you know your shit before you speak cuz just about everything you have said is wrong

TT 6G72's are 8:1 compression not 8.5:1
NA 6G72's are 10:1 compression not 10.5:1

[VR-4TT:)]

unless im reading it wrong, you are wrong also
sequential setup is for quick spool, and high boost
normaly you have either one but not both.

with seqeuntial you have a small turbo and a big turbo with a diferent wastgate for each

you use the small turbo for low end boost(to get the car going) @14 psi then you have that wastgate hold it at 14 psi, mean while your bigger turbo is spooled by now and you have it wastgated at lets say 22 psi....a small turbo will spool quicker, but thet temp will be hotter than a bigger turbo, so with seqeuntial you get the best of both worlds

the ideal sequentail setup would be on a inline 6 be then the all of the exaust would power the small turbo then when it reachs max boost(set by wastgate) it power your big turbo...the only probem with seqential is it is VERY tricky to get setup right

and yes it would be very inefficient to run 1 turbo on a v6....and spool time between single and tt depend on engine and engine config.