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> Regearing for a longer 5th gear, is it a reasonable thing to do?
Dr Evil
post Nov 28 2006, 09:20 PM
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Change the gears.
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Aaron Cox
post Nov 28 2006, 09:21 PM
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taller 5th....

the ratio of a gear is X:Y. you want something 'overdive' under 1:1 ratio... (less tan 1.00)

so if yo take a an H gear...
19:32...

and you flip the ratio (32:19) what is your outcome? way lower than a 1:1 ratio
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jwalters
post Nov 28 2006, 09:22 PM
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What would you think the overall spacing would be (assuming a stock geared tranny) by using a 26" dia. tire.

Kinda like the 2005 caddie down the street from me with 23's on it and 30 series....

That thing has more ground clearance than a hummer........ (IMG:style_emoticons/default/unsure.gif)
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jwalters
post Nov 28 2006, 09:23 PM
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QUOTE(Aaron Cox @ Nov 28 2006, 10:21 PM) *

taller 5th....

the ratio of a gear is X:Y. you want something 'overdive' under 1:1 ratio... (less tan 1.00)

so if yo take a an H gear...
19:32...

and you flip the ratio (32:19) what is your outcome? way lower than a 1:1 ratio



Stock tranny has an "H" gear?? - or is that the one everybody covets??
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Dr Evil
post Nov 28 2006, 09:23 PM
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H gear from a 912 tranny
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Aaron Cox
post Nov 28 2006, 09:26 PM
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read the posts...

GREY outline is stock 914 gears....

mike... stop selling our sources out! LOL
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jwalters
post Nov 28 2006, 09:27 PM
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QUOTE(jwalters @ Nov 28 2006, 10:22 PM) *

What would you think the overall spacing would be (assuming a stock geared tranny) by using a 26" dia. tire.

Kinda like the 2005 caddie down the street from me with 23's on it and 30 series....

That thing has more ground clearance than a hummer........ (IMG:style_emoticons/default/unsure.gif)



Oh, the reason I ask this is beacuse the suspension could be lowered enough in the rear to not have ass high look -

Also, back in my days street rods and sports car addicts had the need to put on larger diameter rears and keep small diameter fronts ( like the 70's - 80's LOLA'S) This actually looks really, really good onclassic sports cars!!

Think about it: matching rims with 15's on front and 21 -22's on the back and a level chassis - looks really cool and would help some with overall ratio I know - just by how much I do not---
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jwalters
post Nov 28 2006, 09:28 PM
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QUOTE(Dr Evil @ Nov 28 2006, 10:23 PM) *

H gear from a 912 tranny



Does it matter which year tranny???
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jwalters
post Nov 28 2006, 09:30 PM
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QUOTE(Aaron Cox @ Nov 28 2006, 10:26 PM) *



GREY outline is stock 914 gears....





OHHHHHHHHH! (IMG:style_emoticons/default/ohmy.gif)
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jwalters
post Nov 28 2006, 10:02 PM
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914fan
post Nov 28 2006, 11:21 PM
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Has someone mentioned or can it be done?

Flip "K or J" gear for a .7 or .677 in fifth. only slightly less rpm.

Less rpm = less cooling. However the cars were designed for a 55mph speed limit. In 4th thats a little over 3k and 5th is 2.5k. 80 is almost 5K in 4th and 4K in 5th. I would like 2-3 hundred rpm less at 80 if it were resonably possible. If you were running a larger, stronger, more efficient motor, that should not be a problem. If you built something with "nikies" and modern FI it could probably be just fine with even lower rpms.

Just my 2 cents
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Aaron Cox
post Nov 28 2006, 11:26 PM
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you can only flip 3rds to 5th's.... and 5ths to thirds....

or if you have a 904 mainshafts.. 2nd's to 4ths' and 4ths to seconds...

now you have to find the gears....
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Dr Evil
post Nov 28 2006, 11:31 PM
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QUOTE(914fan @ Nov 29 2006, 12:21 AM) *

Has someone mentioned or can it be done?

Flip "K or J" gear for a .7 or .677 in fifth. only slightly less rpm.

Less rpm = less cooling. However the cars were designed for a 55mph speed limit. In 4th thats a little over 3k and 5th is 2.5k. 80 is almost 5K in 4th and 4K in 5th. I would like 2-3 hundred rpm less at 80 if it were resonably possible. If you were running a larger, stronger, more efficient motor, that should not be a problem. If you built something with "nikies" and modern FI it could probably be just fine with even lower rpms.

Just my 2 cents


K and J are second gears and would only be possible if you could find them and a 904 shaft to use them with ($$$$).

Your car works harder at higher speeds (thats why it takes more gas usually) so you will make more heat. If you want to put nikies on and do enhancements then you change the whole conversation.
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bernbomb914
post Nov 29 2006, 01:11 AM
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could you build a trans with this ratio
C
I
R
Y
HD

I have all but the I ratio's in my booty and would like to build this to go with my 78x104 engine.
Bernie
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SGB
post Nov 29 2006, 10:36 AM
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Aaron Cox
post Nov 29 2006, 10:52 AM
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QUOTE(bernbomb914 @ Nov 28 2006, 11:11 PM) *

could you build a trans with this ratio
C
I
R
Y
HD

I have all but the I ratio's in my booty and would like to build this to go with my 78x104 engine.
Bernie


you would need a 904 splined mainshaft to put an I on there.... (or you would have to cut old gear off and weld on a new one...ask brant)
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bernbomb914
post Nov 29 2006, 01:23 PM
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what is close to I that would fit or what would you recomend in place of I
Bernie
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bondo
post Nov 29 2006, 02:12 PM
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QUOTE(bernbomb914 @ Nov 29 2006, 11:23 AM) *

what is close to I that would fit or what would you recomend in place of I
Bernie



The F is part of your mainshaft. You can't change it using any traditional means. Either learn to love the F or find an I mainshaft. (good luck)
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bondo
post Nov 29 2006, 02:16 PM
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QUOTE(Dr Evil @ Nov 28 2006, 09:31 PM) *



K and J are second gears and would only be possible if you could find them and a 904 shaft to use them with ($$$$).




H is a second gear too. You would only need a K or J made for a 902. I have no idea if such a thing exists though.
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Dr Evil
post Nov 29 2006, 02:40 PM
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Ya, but he was just asking about swapping in a K or a J and those require the same thing as an H (as stated, 904 shaft). It looks as if I need to get a picture laden thread about what a swap is and why it can be a bitch started some time in the near future. (IMG:style_emoticons/default/idea.gif) Its not like I dont have a bunch of parts (IMG:style_emoticons/default/biggrin.gif)

Scott, your stack is on my front stoop. I'll gat a look at it as soon as possibel so we can start spending your money on replacement parts (IMG:style_emoticons/default/wink.gif)
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