yin

is single turbo stronger than twin turbo?

kwikrx7

Singles are definitely stronger than the twins. They are more reliable and have more power advantages. If you get a T04E or Apexi RX6 - they will spool almost as fast as the stock sequential twins and you can make 400 rwhp on them at 15 psi. The only twins I've heard of that can support big hp is BNRSupercars upgraded twins and M2s BB twins.

jspecracer7

...which aren't really worth it especially if you're going to do it yourself.

artguy

we shall see if they are worth it.

haha

Im still tuning my pfc but my car is running much faster with the new m2's. they spool very very quick yet they have a different feel than stock.

if your motor is built to handle the 18-19lbs of boost that you can run with the m2s then they are worth it....if not then go single...that is if you can pass emissions with the single in your state.

laters

j

Freaky Monkey007

Well if you are talking about about stock twins then yes, but upgraded twins it depends.

yin

wat sequential and non sequential? which is better?

ttpowerd

do a search for info on sequential vs non seq.

Basically the difference is that stock is seq. and that means that the primary turbo comes on and builds up boost...then the secondary comes on and finishes you through the rpm range. Non seq. means that they both spool up at the same time.
Benefits and downsides are argued everywhere...do a search to find out more if you want.

yin

hmmmmm i see..........i always thought that twin turbos were stronger

ttpowerd

With the stock seq. and that rats nest....nope! Also they are smaller and therefore capable of less boost.

artguy

rikki..Im running seq.

Im doing my tuning this weekend...and debating dumping the pfc for the motec.

as far as a movie...once its tuned maybe i can take some vids...but the engine compartment looks like stock twins..the turbo upgrades are all inside the snails...larger wheels and ballbearings etc..

j

1FooknTiteFD

Single turbo rx7's last longer, both the turbo and the motor if tuned properly. Also the single turbo FD doesn't rely on hundreds of vacuum hoses and unneccessary lines that harden or break over time when the get brittle. Also the car will have a lot more room under the hood and cooling will also be better. Overall, I think a single turbo is a better set up, lag is really overated especially when you are racing because you are always on high rpms...and even if you do have lag, nothing feels better than the sudden push of boost kicking in

kwikrx7

What do you mean there not worth it if you do it yourself??

Silver7

I am going to have to disagree here. When I went non seq, I gained a lot of lag and my drag times did not improve. I ran an 11.66@118 with my seq setup. I was not able to duplicate that with my non seqs. IMO, non seq is a band aid for a poorly running seq setup. The only advantages I see to non seq is when you are racing in the rain on a road course
I was able to do a fairly good job controlling my boost spikes with the dawes valve controlling boost and a bleeder valve controlling the prespool.
Currently, my 60-1 turbo has less lag than than my non seq turbos did and also has more top end.
I'm am not trying to say your claims are wrong, but I just feel the need to stick up for the seq setup when someone makes claims like these. I am one of the few who preferred my seq turbos over my non seq turbos.

racer rx

I only agree with Rikki... on the 1/4 mile numbers...
if you were using street tires at the track. As you might be in the below 4500 to launch the car.

If you're on Drag radials you're never below 4500 rpm.

A Street race... is really nice to have a properly working squential turbo as well. Unless you have lotts of freeways of highways to race on.

Not saying that I do street race often... hee hee!
jc.