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> H gear shortage?, Just so you know
jwalters
post Jan 26 2005, 06:28 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Very nice chart !!!!--which gears are the 32:19???

Are those the higher gearsets everybody is talking about??

And what you are doing is taking the respective gears off thier respective shaft and putting them on the other shaft??? Ok, I think I got it now.....or do I?? (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)
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jwalters
post Jan 26 2005, 06:46 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) Ok--I am officially dislexic--I have all three trannies on the floor---for the side shift models--explain to me what detents have it in what gear---

ex: pulled away from case and moved fwd is what gear

pulled out from case and moved back is what gear..etc, etc,

I keep looking at the rod coming outta the car and am seeing stars trying to " see" the rod movement in the tranny shift housing--- (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif)

Would you believe I work on jet aircraft for a living?? (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif)
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dwillouby
post Jan 26 2005, 07:06 PM
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Im confused, I thought you replace 5th with the H gear set, Put the 5th set in place of 4th, and put 4th in place of 3rd?

David
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bondo
post Jan 26 2005, 07:12 PM
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That's what I'm doing. It's more complicated than just moving it though. 2 and 3 have the slider (and dog teeth, syncros, etc. on one shaft, 4 and 5 have it on the other. Whenever you move a gearset from a 2/3 spot to a 4/5 spot, you HAVE to flip it to get it to fit. (By flip I mean whetever gear was on the mainshaft goes on the pinion shaft instead, and vice versa) This reverses the ratio of the gears. (a 19:32 2nd gear becomes a 32:19 5th gear)
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jwalters
post Jan 26 2005, 07:22 PM
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QUOTE (bondo @ Jan 26 2005, 08:12 PM)
That's what I'm doing. It's more complicated than just moving it though. 2 and 3 have the slider (and dog teeth, syncros, etc. on one shaft, 4 and 5 have it on the other. Whenever you move a gearset from a 2/3 spot to a 4/5 spot, you HAVE to flip it to get it to fit. (By flip I mean whetever gear was on the mainshaft goes on the pinion shaft instead, and vice versa) This reverses the ratio of the gears. (a 19:32 2nd gear becomes a 32:19 5th gear)

(IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) OH MAN--NOW I AM REALLY CONFUSED---
my book lists second as 34:18---and is not one of the gears for second cut from the shaft itself??

I need another beer-- (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) ( Big Sigh )
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marks914
post Jan 27 2005, 05:49 AM
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OK here is how it works:
2nd gear is fixed on the shaft, it stays what it is. 5th is replaced with a flipped H gear. If you move 4th to 3rd, it is too tall, that is why you use the flipped N.
If you need to know what gear is what on the shaft, look at the haynes manual, it has a cutaway.

Mark
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bondo
post Jan 27 2005, 10:38 AM
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QUOTE (jwalters @ Jan 26 2005, 06:22 PM)

(IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) OH MAN--NOW I AM REALLY CONFUSED---
my book lists second as 34:18---and is not one of the gears for second cut from the shaft itself??

I need another beer-- (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) ( Big Sigh )

Sorry, bad example.. in the 914 trans, second is unmovable for that reason. The 912 4 speed trans has first as the unmovable gear, and second is the H gear. So putting the H gear in the 5th spot requires you to flip it, giving the desired 5th gear ratio.
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jwalters
post Jan 27 2005, 12:23 PM
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QUOTE (bondo @ Jan 27 2005, 11:38 AM)
QUOTE (jwalters @ Jan 26 2005, 06:22 PM)

(IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)  OH MAN--NOW I AM REALLY CONFUSED---
my book lists second as 34:18---and is not one of the gears for second  cut from the shaft itself??

I need another beer-- (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif)   ( Big Sigh )

Sorry, bad example.. in the 914 trans, second is unmovable for that reason. The 912 4 speed trans has first as the unmovable gear, and second is the H gear. So putting the H gear in the 5th spot requires you to flip it, giving the desired 5th gear ratio.

(IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) Ohhhhh- so I would need an H gear from a four speed-----now it is all starting to make sense.....
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Aaron Cox
post Jan 27 2005, 03:28 PM
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so it drops 5th gear rpm by about a 1000 (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif)

hmmm... with my 50 series azenis...this could be good. that and a flipped 3rd with an H for 5th (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)
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marks914
post Jan 28 2005, 04:49 AM
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The rpm drops 700 rpms in the new top gear from stock (ZD?) gear.
Mark
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dwillouby
post Feb 1 2005, 08:43 PM
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Sounds like I need to pull my trans. again and do the swap correctly.
David
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redshift
post Feb 1 2005, 09:06 PM
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My V8 had a flipped H, but I never went that fast, don't regret that either.

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BigD9146gt
post Feb 1 2005, 09:18 PM
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Heres a spread sheet i got from the bird site...
The HA second gear in 5th would be just a hair under a H gear in 5th.

I know GPR has a few used H's in stock

(IMG:http://forums.pelicanparts.com/uploads4/901+Gears11107314094.jpg)
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bondo
post Feb 1 2005, 09:21 PM
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QUOTE (BigD9146gt @ Feb 1 2005, 08:18 PM)
Heres a speed sheet i got from the bird site...
The HA second gear in 5th would be just a hair under a H gear in 5th.

Did the HA come in any 4 speeds? If it's only from a 5 speed, then it will be part of the mainshaft and unusable for 5th.
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redshift
post Feb 1 2005, 09:29 PM
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Hmm.... it's out there as a single gear, just finding good ones, and robbing banks for fun, and profit... and for the addiction..

I bet that one is hard to find.


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ZachP
post Feb 2 2005, 01:25 AM
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HA didn't come in 4 speed 901s. But I think it was offered as an option for 911S from 1968 until 1970. Can anyone confirm or correct this? That same tranmission was also used in a few circuit races. H, however, was used for 2nd in 4 speeds. Didn't the sportomatic have an HB or something like that? Or Did that also use HA?
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redshift
post Feb 2 2005, 01:38 AM
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Welp....

http://members.rennlist.com/chuxter/901&915ratios.htm

See, the problem is, you won't find it in a 901, 911, 914, or 915 box....

(IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)

Hey, 7:27 r&p? Anyone have that?


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ClayPerrine
post Feb 2 2005, 07:33 AM
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QUOTE (Russian019 @ Feb 2 2005, 01:25 AM)
HA didn't come in 4 speed 901s. But I think it was offered as an option for 911S from 1968 until 1970. Can anyone confirm or correct this? That same tranmission was also used in a few circuit races. H, however, was used for 2nd in 4 speeds. Didn't the sportomatic have an HB or something like that? Or Did that also use HA?

901/00 4 speed has an HB second. I know, I just pulled mine apart last night. The H second is from the Sportomatic.

On topic, If anyone is building a V-8 and is locking out 1st, why not do it right. Get the reverse gear setup from a 901 4 speed. I have one if anyone wants to buy it.

NO, the HB gear set is not for sale. It's going in my car for 5th.
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bondo
post Feb 2 2005, 09:28 AM
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QUOTE (ClayPerrine @ Feb 2 2005, 06:33 AM)

901/00 4 speed has an HB second. I know, I just pulled mine apart last night. The H second is from the Sportomatic.

On topic, If anyone is building a V-8 and is locking out 1st, why not do it right. Get the reverse gear setup from a 901 4 speed. I have one if anyone wants to buy it.

NO, the HB gear set is not for sale. It's going in my car for 5th.

What year is that 4 speed from? I pulled apart 2 4 speeds from mid 60s 912s, and they both had H seconds. I'm not sure the 4 speed reverse stuff will fit on a 5 speed without using the mainshaft from a 4 speed.. maybe it will, I haven't tried it. Using a 4 speed mainshaft would be bad though, as the first gear ratio would be way too low.
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skline
post Feb 2 2005, 09:35 AM
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QUOTE (bondo @ Feb 2 2005, 07:28 AM)
QUOTE (ClayPerrine @ Feb 2 2005, 06:33 AM)

901/00 4 speed has an HB second. I know, I just pulled mine apart last night.  The H second is from the Sportomatic.  

On topic, If anyone is building a V-8 and is locking out 1st, why not do it right. Get the reverse gear setup from a 901 4 speed.   I have one if anyone wants to buy it.

NO, the HB gear set is not for sale. It's going in my car for 5th.

What year is that 4 speed from? I pulled apart 2 4 speeds from mid 60s 912s, and they both had H seconds. I'm not sure the 4 speed reverse stuff will fit on a 5 speed without using the mainshaft from a 4 speed.. maybe it will, I haven't tried it. Using a 4 speed mainshaft would be bad though, as the first gear ratio would be way too low.

(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) I heard the 912 had the H gear in them also.
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