I WAS WONDERING IF ITS EVAN IMPOSSIBLE TO PUT A TWIN TURBO ON A SUPERCHARGED
COBRA
SOME GUY WAS TALKING CRAP SAYIN HE HAS A 03 COBRA WITH A SUPERCHARGER AND TWIN TURBO ON IT
I SAID HE WAS FULL OF IT
BUT JUST WONDERING

Anything is possible if you have the money for it.

http://img213.imageshack.us/img213/7603/sema07tudsc9398hf7.jpg

that kit would probly make more hp without the supercharger, also its not good because the blower will limit the available rpm range that you can turn... its good in theory but has some practical drawbacks.. it should have 0 lag though! Perhaps if it used a 2.2 kb with it would be better

Tell him he wasted his money. 40 plus psi is not very impressive for hitting 1100 or 1200 HP.

they have to because the supercharger is that restrictive... its really just a gimmick

++1

it is actually very effective. it uses a compunded boost effect. they are safely making close to 1200 hp on a stcok motor cobra.

Hmmmm. Compound boost to reach over 800rwhp must reach a boost level of 38psi. Twin 57mm Turbo must reach22or 24psi. To me thats not very effective.

I think it depends on how you look at it. Raw power, it's not the best, but with constant boost through the entire RPM range, it would be fast as hell. I mean, how much more power do you really need once you get around 1000 HP? Having torque at top and bottom end though would be amazing. I think too many of you just look at the numbers and not what the car could actually do.

I WOLDANT SAY ITS POSSIBLE
UD BLOW EVERY SINGLE INTERNAL
TOO MUCH PRESSURE FROM A SUPERCHARGER AND TURBO

I MEANT IMPOSSIBLE LOL

ORIGINAL: DOHC

Hmmmm. Compound boost to reach over 800rwhp must reach a boost level of 38psi. Twin 57mm Turbo must reach22or 24psi. To me thats not very effective.


turn the turbos up over 16 psi and see what happens. in the mm&ff 27 psi at the turbos made 1,188 rwhp an 1,015 tq. no twin turbo set up has made numbers like that that i have seen. marks single 88mm turbo mad 999.7 rwhp at 33 psi. and the motor did not last long.

ok, no its not impossible....do some homework on hellion kits. go to page 126-134 in MMFF and read. its more than possible.

27 psi for turbo plus 17 psi from blower = 44 manifold psi which is the boost pressure

ORIGINAL: 1999SVTCTT

I WOLDANT SAY ITS POSSIBLE
UD BLOW EVERY SINGLE INTERNAL
TOO MUCH PRESSURE FROM A SUPERCHARGER AND TURBO



You need to read up on compound boost... thats why they use both.. for less strain on the internals...

^^+1

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You need to read up on compound boost... thats why they use both.. for less strain on the internals...
[/quote]
Please explain. Turbo's use free hp.. Superchargers use HP.. And what about the fact the compound boosting you need more boost to make the same HP as with just turbo's. It is true that it works, but for the fact that its better than turbo's... I'm not so sure. The higher the boost the more strain on the internals

the compound boost will eventaully cause the blower to spin at a rate that it will become ineffective, kinda like a blow through carb.

mm&ff mag-i think its the nov or dec issue? they actually have an aticle on this. they did like 60+pounds and made like 1,188 hp correct me if im wrong.

pg 126-134 dec edition 44psi manifold lifted the heads from the block, and the 41psi produced 1188hp and 1050ftlbs...on stock internals.

tha fact is the 41 psi at the manifold using the compunded boost does not put as much strain on the motor internals which is why you can safely make almost 1200 hp on the stock motor. not to mention having the blower boost down low is going to keep the tq up on the low and which should make for some seriously fas 1/4 mile times.

from my understanding the turbos are large enough the wont kick in until the stock eaton stops producing boost, and then the turbo's kick in and there more power on tap.

thats a part of it, the blower never stops making boost thought it will amke max boost all the way till redline, but what happens is the boost form the turbos is compouned to take 20 psi and make it to 30 psi as an example. so max boost is greatly increased without putting the motor in danger like it would be if you ran 40 psi through just a turbo.

SO THE STOCKER IS RUNNING (sorry for caps) 20psi, and then that max's it out, then turbos just add 20more psi for the total of ~40psi

it is a bit more complex than that and there are ratios to figure out the exact compunding effect but yes something like that. but it does not stress the motor the way that running 40 psi through twin turbos would.

yeah, i just wanted to make sure i had the basic idea, i cant find the formulas or anything online, do you have em?

http://www.musclemustangfastfords.com/features/mmfp_0801_twin_turbo_compound_boost_2003_mustang_c obra/index.html

Google ftw

ORIGINAL: Blownsvt

tha fact is the 41 psi at the manifold using the compunded boost does not put as much strain on the motor internals which is why you can safely make almost 1200 hp on the stock motor. not to mention having the blower boost down low is going to keep the tq up on the low and which should make for some seriously fas 1/4 mile times.


... make 1200 hp safely on a stock motor.... huh :eek:ok, do you believe in the Easter bunny to?

compound boost? Nigro please, there is no less stress on the internals, who ever said that is retarded, if an engine produces 1200 hp, it produces 1200 hp the effects of which are still the same, if the charger is "compounding boost" (which it may be at low rpm, but up top its just limiting it) then its putting more strain on the internals, not less... but that theory doest hold water given the fact the amount of claimed boost per hp gained is not as efficent as a straight twin turbod car, and your still rpm limited... its the turbos that are making all that boost, not the s/c and no where that much flow is being seen by the internals, becuase the supercharger is restricting them, so yeah you could 1000lbs of boost your still trying to push it through the stock m90 at 6500 rpm... it just doesnt make practical sense, not to mention your still keeping a parasitic loss... I mean the kit has some value, dont get me wrong, but your going to make more power, more efficently with just the twin turbos, the m90 component is there for a "specialness" factor and does nothing but lessen the potential performance of that system

i guess we will see how cars with the hellraizer run at the track compared to the ones that are straight twins.

ORIGINAL: banned

ORIGINAL: Blownsvt

tha fact is the 41 psi at the manifold using the compunded boost does not put as much strain on the motor internals which is why you can safely make almost 1200 hp on the stock motor. not to mention having the blower boost down low is going to keep the tq up on the low and which should make for some seriously fas 1/4 mile times.


... make 1200 hp safely on a stock motor.... huh :eek:ok, do you believe in the Easter bunny to?


On marks 88mm turbo car 33 psi lifted the heads and blew out both head gaskets on the first pass. the compounded boost must be acting differently if it was taking 41 psi on a stock motor for multiple dyno pulls.