914 tranny?? Options

[Sean_S]

Hmmm, well I also have a sandrail...VW powered.
My experience in the dunes is that the transaxles take a bunch of abuse beyond strictly calculating the "street" maximum HP/T allowable.

You will probably be running tall paddles and pounding on first when you get stuck....or the relentless woop-de-dooos.

Long story short, torque is introduced into an off road vehicles driveline by more than the powerplant alone.

For this, short of going with a Mendeola, it seems that the 6 rib vanagon tranny is the best thing around...possibly this can even be beefed up and they are cheap and available. They are supposed to take 300 HP of piston and are geared and designed for a big ol' heavy van.

Anyway, around here that's what the <$50K rail guys use.

Good Luck
Sean

[skline]

Do you mean to tell me that there are sand rails out there that are more than 50k?

[Dairdevil9]

ill get some pics up by tom. It is a a fiberglass buggy (for street use only) so it has virtually limitless room but it all depends on how far i want my motor to stick out the back.

[Dairdevil9]

i was quoted today for a built Mendeola tranny for the kind of power that im gunna have, at $6,200 (IMG:style_emoticons/default/huh.gif) a little to much for my wallet

[Bleyseng]

I have to post that these turbo rotary engines still have lots of torque. My son's Turbo 2 will burn off the tires in the first 3 gears if you want. It has 300+ rwhp.

I agree that the lowly 12a motors were fairly weak.

Its like comparing a 1200 Bug motor to a 930 motor.


Geoff

[Sean_S]

Do you mean to tell me that there are sand rails out there that are more than 50k?

Waaaay over!

You should see the guys that pull up in 200K+ motorcoaches pulling 50K toy haulers, unloading 100K rails and still smiling after they total their rail at 85mph.

I guess it's all downhill after your first mil'.

The sandrail craze is sick. 700hp Subaru or Honda powerplants...etc.

The top guys around here run VW's with 6rib bus trannies. Have a look at my friend Rob with his personal VW type 1 motor:

Bug Germanators

His 200hp-ish motor is about all I can fathom in the dunes...a ride with him is almost pants wetting. More than that seems like a liability.

Sean

[Aaron Cox]

(IMG:http://www.buggermanators.ypgs.net/members/806668/p1i2.jpg)
supercharged ans Super flow heads?> what HP does that put out?

[Sean_S]

According to Rob, it's not the HP that's impressive on this motor, but the strong linear torque.

Of course, separating HP and TQ numbers is pointless (which is probably why "real" sports cars are rated in KW), but this engine supposedly makes great power *everywhere*.

He just installed it and is tweaking it up, so the final dyno will remain to be seen.

Sean

[d914]

or check out these guys, trannys for rails and high hp vw


http://www.mendeolatransaxles.com/index1.php

[Mueller]

wow....they "start" at $5,000...ouch....now that I think about it, I guess that is not too bad for a brand new transmission...still, it has to hurt the wallet and then some (IMG:style_emoticons/default/smile.gif)

[d914]

and you can do a flip ring and pinion......ideas anyone......$7k will handle 500hp

[Dave_Darling]

The 930 gearbox was built to handle the 300 HP 930 motor, reliably. It should be able to handle significantly more, I would think. The 915 lasted through the 217-HP 3.2s, and should be capable of handling more than that.

The G50 was introduced in 1987 on the 3.2 Carrera (earlier 3.2s used the 915 gearbox), and versions of it were used up until pretty recently. The G50 is a five-speed; the "G60" is a six-speed. They are built to handle... Well, a whole bunch of power.

I would guess that the 930 box would be the most reasonable alternative. It is only a four-speed, though. But with turbo torque, you probably won't need too many gears.

--DD

[Dairdevil9]

what model/year car does the 930 come in? and i heard a guy talking about the 901 tranny, do you guys know anything about that one?

[skline]

what model/year car does the 930 come in? and i heard a guy talking about the 901 tranny, do you guys know anything about that one?

The 930 was first introduced in late 75 or 76 and went up till around the mid 80's. The 901 is the transmission in a stock 914

[scotty914]

the 901 is the 914 and early 911 tranny, it basicly came in 3 set ups two were tail cone shifters. but each of these 2 were set up with the r=p in opposite directions, and the third was called a side shifter tranny because the shifter was on the side of the tranny.

basicly
901 tail shift tranny in front of motor is early 911 ( the one you want if you go 901 )
901 " " " behind motor is early 914
901 side shift is 914

scott t

[Dairdevil9]

so what exactly is the HP limit on the 901? or aprox? cuz there are a few of those going on ebay right now for around a $100 bucks.

[skline]

They say, the 901 can handle up to 300 HP. Many V8 guys are running them stock in their car with no problems, but they do not use first gear.

[Mrs. K]

They say, the 901 can handle up to 300 HP. Many V8 guys are running them stock in their car with no problems, but they do not use first gear.

(IMG:style_emoticons/default/idea.gif) Hey Scott,
Did you notice the time stamp on
this post????? (IMG:style_emoticons/default/lol2.gif)

Lisa (IMG:style_emoticons/default/biggrin.gif)

[Dairdevil9]

because of the low bottom end torque of the rotarys do you think it would be safe to run a 901 tranny out of a early 911 and just start in second if i prestage the turbo's and luanch?

[skline]

That is a good question, I am not sure what kind of torque you will be pushing off the line. The 911 901 must have been a little more beefy to handle the power of the 6, but then again, it didnt put out that much more than the 914. Hard to say. You could just try it, what have you got to lose? Its only money. (IMG:style_emoticons/default/biggrin.gif)