Quick Question: TT engine in an SL

Is it possible to put a VR4 engine in an SL without changing the engine mounts? I've heard that it is not.

I believe you can put it on without changing the mounts, but there is a lot more to turning a SL into a VR4/SL hybrid.

I was wondering the same thing. What all would this entail doing? And should I also use NOS? :confused: :D

Thanks alot yogs. I think I'm just going to buy a VR4 instead of messing with the whole engine swap idea.

Just my opinion Phate, I would never use NOS. I think it's kind of pussy. I'd leave NOS for the civics. Plus, pumping explosive gas into your engine is never good for the car.

Yeah. It is pretty harsh on the engine I supose. I'll just work on adding the TT. Thanks Lick.

You wont regret the TT once you drive one :D

Yeah NOS will put some serious wear and tear on your engine. And, unfortunately, its not cheap to replace a VR4s block as opposed to the mouse on a treadmill civic ;)

Hrmmm. . . I think my friend is on crack or something. Want to get your opinion. . . . He says that Single Turbo is better than TT. Thats not right. What do you all think?

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.

So what would each add to my already 220 hp?

Turbos add horsepower by the amount of air you move through them. For the stock 9b's that come with the VR4, you get about 10hp for every PSI you put through them. Because the VR4 are sequential, the 10 psi they normally put out gets us to the 320hp rating of the VR4. Most of us have boost controllers that can safely take it to 14psi which adds about 30-40hp.

If you were to just put a turbo on the car, you'd have to put in a decent gaugue and controller as well. If you were to go with a large 650DR you might be getting 15hp for every psi. Then you have to know how much boost your engine and turbos can handle. A lot of aftermarket turbo add ons can only safely run at 5-7psi (still a good amount of added horsepower).

Personally. . . . which would you install? :D

Originally posted by Phate
Personally. . . . which would you install? :D

Obviously neither of my VR4s require a tubo since they have two each :D But if I had an SL and wanted to put one on, I'd look into a single turbo bolt on. It would be the least expensive way to go. I have not heard of anyone who has done that to it, but I would imagine that it could be done. Someone has had a low 15 second or a high 14 second run in his SL without using NOS so they can be made quicker without forced air. If you haven't stopped at www.3si.org yet, I suggest you do. The real 3000 tech heads hang out in there.

Another kick ass site about these cars is http://www.stealth316.com/0-frames.htm take a look in the technical area for lots of info.

Thanks. I signed up for 3Si.org. Just waiting on the approval. :) I'll see what I can do about the Turbo. For some odd reason my Insurance Co. swore up & down that it was TT. I had to take them out there and show them to prove it wasn't. :rolleyes: lol. U would think they would know their cars better.

You might want to check and make sure they have the right VIN as your car. Thats how they tell the make and model.

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

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. :bigthumb:

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

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.