[Sunrise City Rider]

You know its inevitable for someone to build the new H6 engine block and work over the heads with some heavy breathing artillery to put Subaru ahead of ahhhhh say Toyota...

I want to start a thread that discusses the workings of FHI's new H6 engine... So say what you know about it and what you think its capabilities are...Think about it, Its coupled to our same Drivetrain but its not available in Standard 5 Speed but I'm sure that if Subaru has any brains, They will develop a SportsCar Platform, Maybe a Legacy Chassis using the H6 and say the Sti 6 Speed Transmission...

.I think that they will not put the H6 into the GC8 but that Won't Stop one of us from dropping the H6 into an older GC8 and run a Standalone...What more do you want? All it takes is money and a will...More Will and Spirit than Money is what it will take...

Zee:nuetron: :nuetron:

 

[Imprezinator]

I'm sure someone will do it. I believe the new H6 is only about .7" longer than the EJ25 block.

 

[Imprezinator]

Also don't forget the success that Porsche has with their H6 engines. 420 street legal reliable horsepower and one of the baddest street cars you can buy! I'll take it!

Eric

 

[HondaH8er]

From what I've heard, thought, to make the engine so short, the cylinder walls are very thin and close together, so boost isn't a good idea, do to weaker walls and poorer cooling capabilities. Also, the back of the engine can't accept a manual transmission, due to the way the back end is shaped, no room for the manuals flywheel, and that was also done to shorten the block. Oh, and it's heavier than the 2.5L, so if you put an H6 into a GC8, it's going to be really front heavy, which might not be a problem for dragging, but will be bad for autox and rally stuff. But I still want to see it, but I don't know if you could get as much power out of it NA as you can from a FI 2.5L H4.

 

[RS25.com]

You all have been reading my homepage!

http://www.RS25.com

I wanted to turbo a H6, relocate the battery to the trunk, get an aluminum hood, and maybe the lightweight front bumper supports to compensate.

That would have been fun even if it DID blow up!!! :biggest:

 

[Sunrise City Rider]

We need subaru to help with the tranny...

I know what youre saying about AutoX or what not...But I bet, with the DMS 50MMs or similar, you'll have the proper suspension to stabalize the Chassis, allowing for an awesome car on in to drive in a circuit race...Have you ever seen ther Hartge 5.0liter in the BMW 3 Series Chassis? and it's motor is in front?...

And thats why I mentioned FHI/Sti... We need a factory backed transmission or else the project will get over-expensive, unless we get a Full Sponsorship by SOA and APS or something...

After that you can angle the motor and adjust the motor mounts to compenste for larger motor...

Oh and you know all the fastest Drag Supras are running GM PowerGlide Transmissions...Vinny Ten--8.1sec, Craig Paisley 8.3sec, Ruff Racing RX7 Powered by a Single Turbo'd 2jz-gte--High 9's...and now look out for the Toyota V8's running TwinTurbos in the Miami International Turbo's Supra, Its gonna run a GM V6 at first then they will swap the motor in...

I know the EJ25 can cut a fast time but I think things will be faster with the H6 in the GC8 chassis...

Zee

 

[yamarocket630]

FHI can put a manual behind the H6 if they want to... lets all bug them on their website to build a manual tranny H6 Legacy GT... I already have!!

 

[RS25.com]

If the 4EAT bolts up to the H6 why wouldn't the 5-speed? Hm? Food for thought. Of course, I can see all the gears going bye-bye once you get some serious power into the engine. Hence why I was thinking of using my 4EAT with the H6 and have LevelTen do some work on it (new Torque Converter, rebuild the what-cha-ma-call-it (body/valves/shift something - Brain :stinky: )

I think that, coupled with their Shiftronic (if they ever finish that) would be awesome. :biggest:

 

[Sunrise City Rider]

We need info....

I wanna know more about the engine and what its numbers are...IE...Compression, Type of Metal used to build it, Power it produces, Rev Limits, where in the powerband does it make its most HP and Torque, Pictures of the H6, Location of the Exhaust Manifolds, All the vital info, so that we can find...

Zee

 

[meebs]

years ago.

It was done years ago... called the Subaru SVX

Specifications

Horizontally opposed 6-cylinder engine

4 cam, 24 valve

96.9mm x 75mm (3.815" x 2.95")

230 HP @ 5400

228 lbs/ft @ 4400

10:1 compression ratio

Overview

The SVX engine is a 3.3 liter flat 6 engine that is virtually bulletproof. Imagine, it has seven (yes, count ‘em, seven) main bearings. All supporting a crankshaft that is only slightly longer than three cylinders. The main bearings are supported by a cross-bolted aluminum block. Although no one seems to be racing the SVX, IMHO, this engine has as much performance potential of any six-cylinder engine of a similar size that is currently available. The rods and crankshaft are forged steel and the pistons are forged aluminum. With a shorter intake port, a larger plenum, a longer exhaust header primary, and a higher rev limit, this engine is easily capable of making 300hp in a naturally aspirated state. Add a turbo to each bank of the engine, a pair of intercoolers, and lower the compression ratio and you could approach 550+ horsepower on pump gas.

edit: link http://www.subarusvx.com/

 

[Templar]

Actually the Bell housing on the 4EAT that is bolted up to the new H6 is different and has a different bolt pattern than the 5 speed. Anyway, if you are talking drag racing, why wouldn't you want an auto with a good torque converter in it?

But a Skyline six speed is rumoured to bolt right up to the SVX engine, and lots of rail buggies use SVX engines that have been twin turbocharged to put out some really sickeningly big numbers closing in on the 600 mark last I checked.

 

[RS25.com]

Any idea of how much the SVX engines weighs, and it's overall length in comparison to the 2.5L? I want a 6 in my car one of these years...

 

[Imprezinator]

Guys, the SVX engine is not even close to the same as the new H6 Subaru just released. The SVX engine is EXTREMELY heavy. Don;t try to put it in an RS.

Eric

 

[Sunrise City Rider]

Not too far fetched...

Oh yeah...You're 100% Correct, Eric...
The SVX Chassis is massive compared to the RS GC8...

The SVX engine Belongs in the SVX...

The H6 seems like it was built to be able to fit in a Legacy or any of the Wagons...

Still need info about the H6...Is it sold anywhere else in the world?

I'm sure if it was sold in, sayyyyy, Australia, It will not be long for some Cooky Aussie to put his welding equipment to some use...All it takes is a "Cradle" or "Basket" with the correct mounting points for the H6 and the Correct Mounting point for the EJ25, You can build a Tube Front Chassis... and maybe a Cowl Induction hood and Look out...

Zee:sunny: :nuetron: :biggest:

 

[Templar]

At Prestige Subaru recently, Scooby South, Deadbolt, and I did some measuring and figuring about if the new H6 would fit in a GC8 chassis. The block will fit, but you will have to do some mods to the cooling system. The radiator will need to be moved down and forward, and the fans moved forward the same amount. The fans would hit against the belts on the engine if they are not moved forward. But other than that the block will fit. Then comes the tranny problem. The auto that is equipped on the new H6 is a different bolt pattern and bellhousing shape than that on the GC8. The car could be made to fit with some cutting here and there, but you would still have the automatic. The 5 speed that we currently have, will not fit. There are pins at the back of the block in different areas, so it can't be mounted.
I hope no one takes this as "Templar is trying to piss in everyones cheerios" because Scooby South was thinking seriously about picking up an H6, turbocharging and dropping it in. The block in itself isn't physically much bigger, or heavier than the ej25, but the slight size difference, and the tranny problems do present some fairly formiddable problems. We decided that nearly as much peak hp and torque could be achieved, at less expense and easier, from building up a 2.5 and turbocharging it correctly.

 

[JC]

I think a new turbo'd H6 dropped into an SVX w/ a level ten tranny would be sweet. Maybe when I graduate....

 

[JaiMak]

There is supposedly some dude just outside toronto that stuffed an SVX motor into an impreza...

Meebs, you caught this post before me, I was about to say the same thing.

SVXs are cool though, suede trim around the perimeter of the "cockpit", the crazy windows, and torquey motor.. that and the fact that a friend just got one for $6000 CDN in really good condition.. ('92)

 

[chkltcow]

$6000 CDN?! That's like.... $3, isn't [email protected]
:run:

I'm trying to talk my friend into an SVX... but...
A) he doesn't like the fact that it only comes with an automatic
B) we can't find a cheap one around here

Maybe we can find somebody who is selling their 2.5RS for a WRX and he can get one of those

 

[Imprezawd]

HEHE

Be one fast Car !!!!!:barf:

 

[WRC]

This would be sweet!

Hey guys!

what if Subaru came out with a new SVX? and think if it had a 3.5liter H6 with vvt and had 250 hp NA!!!!!!!!

that would be sweet. throw in a 6speed close ratio tranny and a 7000 rpm redline and cut down the curb weight to about 3200 pounds and it would fly.

wake me up, I am dreaming

anyway, It would be a cool swap and probably would work.:checkit:

-Aaron:nuetron: