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Author Topic: Fabr's Car-VW/busa crossbreed  (Read 264128 times)

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Offline fabr

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Re: busa/VW crossbreed?
« Reply #60 on: October 23, 2008, 04:12:35 PM »
Quote from: artie on edge on October 23, 2008, 03:54:11 PM
this is the box i used in my full sized car days. Never broke one, ever! Abused them, always! I used Albins gear sets in all my boxes, that would be why Im thinking they never failed, to be truthful I only ever used modest hp, fairly low torque power plants (class rules).
Can you tell me what kind of torque you had and what max rpm you had? I'm trying to decide if the busa in 6th or 5th or even 4 or 3 gear would over power the vw trans. In other words does anyone know what kind of torque a built VW engine makes or how much torque a built 091 can handle?
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Re: busa/VW crossbreed?
« Reply #61 on: October 23, 2008, 04:26:01 PM »
well My buddy had a 2330 blown that was 375 hp, at about 5500 rpm, you can figure the torque mathematically correct? all tho i dont recall it being a stock bus trans tho... generally a built vw will average from 100-165 hp, at a range of about 5500 rpm i think..
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #62 on: October 23, 2008, 04:45:34 PM »
approx 360 lb.ft. for the blown sucka. Was it raced only or duned?
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Re: busa/VW crossbreed?
« Reply #63 on: October 23, 2008, 05:00:09 PM »
duned, They had the rear cage chained at the bottom cause he kept tearing it off... looks like the average is 125-250 torque...

the blower was custom built for that By Dick laheigh If i recall, does that name sound right, ol drag racing guy...
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #64 on: October 23, 2008, 07:50:40 PM »
Dick LaHaie I think it is.Drag boat and top fuel legend. Seriously tho what kind of max rpm and tq. are vw's typically capable of now days?
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but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Re: busa/VW crossbreed?
« Reply #65 on: October 23, 2008, 07:59:25 PM »
almost all the dyno sheets i have seen say 6 k, redline at 7, 125-175 lbs torque..
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #66 on: October 23, 2008, 08:03:34 PM »
Any idea what max tq an 091 is capable of with weddle or albin gearsets? Know of any GOOD vw sites?
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but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline fabr

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Re: busa/VW crossbreed?
« Reply #67 on: October 23, 2008, 08:05:37 PM »
A busa in 6th at redline is turning approx 6600rpm at the countershaft. Nearly the sdame as the vw at redline.Hmmmm....... 
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

artie on edge

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Re: busa/VW crossbreed?
« Reply #68 on: October 23, 2008, 09:09:43 PM »
Quote from: masterfabr on October 23, 2008, 04:12:35 PM
Can you tell me what kind of torque you had and what max rpm you had? I'm trying to decide if the busa in 6th or 5th or even 4 or 3 gear would over power the vw trans. In other words does anyone know what kind of torque a built VW engine makes or how much torque a built 091 can handle?

Mast, torque????, I have no idea! It was a Nissan A12 (1200cc) spinning up to just on 10k but up to 8k was useable.

They were built to class (Class 3) specs using an A14 cylinder head hepolite pistons and steel crank and rods. Pretty much bullet proof as was the trans. End of each season it got rings bearings and valve guides and went again.
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Offline Engineer

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Re: busa/VW crossbreed?
« Reply #69 on: October 23, 2008, 11:19:24 PM »
Master,

I believe you are correct on your 2.5" - 3" assumption from centerline.  Pics attached.

From what I have heard it takes a very healthy VW to make over 200Hp.

I broke a 091 with a pinto motor.....  Like anything I think bulletproof is going to be determine by wether or not you do a lot of wide open clutch sidestep dragracing, jumping and landing wide open, or landing at idle, etc.

If you run the busa in 5th to 6th gear, the numbers actually don't look to bad.

I know in researching the Subaru angle many people said they had good luck with the 091 at 300hp or less.  Of course dependant on driving style.

 
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #70 on: October 24, 2008, 06:06:19 AM »
Thanks for the pics.I found those also last night.I assume the 091/pinto was a stock 091 and did not have weddle or albins gearsets in it.Is that correct? I think what I need to know is  max torque that a built 091 is capable of.Is that a correct assumption?
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

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Re: busa/VW crossbreed?
« Reply #71 on: October 24, 2008, 07:41:08 AM »
I'm not a VW guy but Ive been reading this thread every day...I'm wondering how heavy is this trans and would it be too paracidic behind a 2 stroke sled motor?
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #72 on: October 24, 2008, 07:52:32 AM »
I don't think an 091 would be suitable for a smaller buggy due to its weight and size.  I'm thinking for a midsize it MIGHT be the cats ass behind a busa.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline Engineer

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Re: busa/VW crossbreed?
« Reply #73 on: October 24, 2008, 03:52:00 PM »
Quote from: masterfabr on October 24, 2008, 06:06:19 AM
Thanks for the pics.I found those also last night.I assume the 091/pinto was a stock 091 and did not have weddle or albins gearsets in it.Is that correct? I think what I need to know is  max torque that a built 091 is capable of.Is that a correct assumption?

Correct
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Offline fabr

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Re: busa/VW crossbreed?
« Reply #74 on: October 24, 2008, 05:06:18 PM »
busa                       VW
2.615--1st----------1st-3.80
1.93---2nd----------2nd-2.06
1.285-4th-----------3rd-1.26
1.043-6th-----------4th-0.82   

A busa @10.5K after the 1.596 is 6579 RPM at the countershaft. Same type of rpm the VW runs at redline. Also similar rpms under all drive conditions as the VW. The VW seems like it has a nicer spread of ratios also. Actually lower by a lot that I think would improve all around drivability.
So the question I REALLY need an answer to is this-What is the real world torque at the busa countershaft if the dyno shows REAR WHEEL TORQUE of say 200 lb Ft.?  Is it an actual 200 at the countershaft?  I'm a bit confused on that point.         
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"
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