Harrop TVS - Coming Soon!!

[Shabodah]

Originally Posted by SilverRedLine04

negative, full throtle found support for a race tranny.

There are a few things out there for our transmissions, but most of them are expensive. The biggest issue with the transmission is its housing IMHO. The new trans in the Turbo Cobalt has a revised clutch housing (bellhousing). I'm hoping this helps a bit with the cracked case issue.

As far as internals are concerned, there are three options out there:

Cryo treated components
Micronite treated components
Quaife Gearsets

[AlphaJaguar5]

Hey shab can I borrow a few thousand bucks?

[ebristol]

Originally Posted by SilverRedLine04

negative, full throtle found support for a race tranny.

build to handle anything. pm him.

also that post about rebel.. they lost every ounce of possible hope i had that they didnt suck ass.

i wouldnt buy a spark plug from them. the poor guys that got screwed around with the twin screw saddens me. tvs all the way~!

The TS was a bad situation. But the more vendors that support the LSJ the better. I wouldn't totally count them out.

I was just checking out their Stage 1 kit.

http://www.lsjforums.com/forums/show...ht=rebel+stage

I like the fact that they are not trying to push the engine to its break point like Intense. If I didn't have GMS2 I would definately consider this kit.

[qwikredline11]

Harrop's piece sure looks like a winner. The issues seem to come back to the same things: do you have enough money to do this mod? Can you calibrate the engine properly? GM has done excellent 100% calibrations to suite the M62, I have no idea what .32 litres more air from the supercharger would do to all that; is there enough "room" in the GM calibration to accomodate that? Dont know. BUt I do know that GM's smarts are worth more than my mistakes so forget dicking with the calibration unless you are really clever and can afford to buy engines if you make a mistake. The Rebel guys obviously bit of more than they could chew. Harrop is in a different league, Aussies are really wizard types.

The GM calibrations have all the settings in it to protect the motor from too much heat , runaway detonation etc, and thats really valuable. Thats why GM stage 2 is bullet proof, and stage 3 ditto.

Can you get rid of the heat? Anything less than a larger griffin intercooler, a modified laminova and a larger remote reservoir, well you might as well stay home,and not spend money on that really nice Harrop part.

Read the GM Performance build book. Ditto with the power hop issue. If that is not fixed stay home, you will break everything when you launch hard with all that power...to eliminate power hop (all!) you gotta do is rotate the motor up 10mm at the back down 10 mm at the front with harder bushings; you dont need to modify the side engine mounts they will flex to accomodate. Then locate the lower control arms with better bushings. ..

then when you get everything done, you can generate enough torque the tranmission will eventually give up, but probably not if the launch is stable. Unless you drag race and power shift...but then Power costs money... I lust after that Harrop blower what a nice piece...when is AlphaJaguar5 gonna run it? let me know buddy!

[fullthrottle]

Originally Posted by ebristol

Why would you need a return-style system with 42's? The stock fuel system can max out fuel delivery on 42's no problem. And the only time I have heard of peps blowing their engines on 42's is because of boost-by pass mod, way too small of a pulley, bad tuning or too much heat.

I agree the cost/gains would probably be minimal.

its the lack of being able to up the fuel pressure that is causeing alot of people to not be able to run the 42 LB/HR injectors. with a return style fuel system you have control over the Fuel pressure this allows you to up the fuel pressure which inturn effectively will lower the injector duty cycle allowing you to run the easier to tune 42 lb/hr injectors in a high HP high boost application.

[nramlow2006]

Originally Posted by LSJ PUP

I love how he says it will be only $2,250. Yeah, no big. lol
I guess it could have been much worse. Not to mention that it is a direct bolt-on.

lets hope its not another rebel twin screw massive failure

[Juggernaut]

Its been stated that your going to need larger injectors. 60's im guessing? or would a conservative tune and 42's work?

[ebristol]

Originally Posted by Juggernaut

Its been stated that your going to need larger injectors. 60's im guessing? or would a conservative tune and 42's work?

This pretty much sums it up.

Originally Posted by Shabodah

I think you might be able to pull off running 42's with a return-style system and a huge pulley on this thing and see slight gains, but, really, it doesn't seem worthwhile to spend this kinda of money ($2200) for small gains.

It would be possible but the for the small amount of gains it is probably not worth it. Basically you would be using the same amount of air (volume) created by the M62 but it would be a little cooler and there would be a little less strain on your engine's belt drive system.

How much hp would that free up? idk. But even if it was 20hp at $2200 + install + tuning + supporting mods it would cost well over $125/hp. With 60's you might (who knows) gain 50 hp which would drastically bring down that cost per hp ratio.

A good example is the GMS2 kit. At the dealer price of $750 and gains of 36hp (according to GM) the upgrade equates to $21/hp. So you are getting more bang for your buck.

[Juggernaut]

All i have is Stage 2 basicly. when/if I order the charger, 60's+harness, and go get her tuned. Conservatively let say I put down 260 - 270hp, I am going to need a new clutch and exhaust probably, right? This thing will probably murder my stock downpipe and my clutch I dont think can take anymore than my 2.8 setup. So all in all for me to realisticly make the jump here its going to be a shitload more than the cost of the blower. Im thinking around 3500 for the charger, injectors, tune, exhaust, and clutch. This is major, and I dont have that kinda money right now. So i was wondering if you could put a very large pully on to retain the 42's and stg 2 tune. Then that would give me time to save my money back up for the supporting mods im going to need once i get the 60's and their tune. Does this sound realistic at all?

I really want this thing, but im a broke ass :P I would need to upgrade my car in phases, I cant afford to do it all at once.

[SilverRedLine04]

bummer about 42's not being big enough.

i was hoping on running them.

oh well