What would be involved in using the 5sp and T4 engine from a 914 in a speedster?
Doing planning at this stage
Woody
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What would be involved in using the 5sp and T4 engine from a 914 in a speedster?
Doing planning at this stage
Woody
Doing planning at this stage
Woody
In the 914 the transmission is behind the engine at the rear of the vehicle --- its a mid engine car. The speedster is a rear engined car --- is 5 spd in reverse and 1 forward ok? On some transmissions you can flip the pinion gear but not aware of this being able to be done with the 914 trans. You can use the more modern T4 engine - converting it to upright T1 cooling. If you still want a 5spd you can use an early Porsche 911 (901) transmission (its not a simple bolt in though).
Steve,
What do you mean when you say "got it back from the overhail show"? You're not referring to Chip Foose's gig are you?
What do you mean when you say "got it back from the overhail show"? You're not referring to Chip Foose's gig are you?
Steve,
Could you provide a few details on what goes into flopping the ring gear? You should email me if you'd rather. I have a nice side shift trans that I'd LOVE to install in the drag car. I would think that a cable buggy shifter would tie it all together and make it work out well.
Please, fill me in on the step by step.
Thanks!!
TC
Could you provide a few details on what goes into flopping the ring gear? You should email me if you'd rather. I have a nice side shift trans that I'd LOVE to install in the drag car. I would think that a cable buggy shifter would tie it all together and make it work out well.
Please, fill me in on the step by step.
Thanks!!
TC
You can definately flip the ring and pinion on a 914 transaxle. We have a side shift 914 transaxle. When we got it back from the overhaul shop, we had 5 reverse and 1 forward gear... It takes about 20-30 minutes to flip. Really easy. angela
The 914 does utilize a 901 tranny! Up to 1972 These were tail shifts just like the 911 version, just with a flipped diff and different top end gear set. In 73 the 914 went to a side shift and those are near impossible to put into a rear engine vehicle..
The 901 ring gear (diff) can be flipped. I have done it easily.
Remove the tranny side cover..
Remove the intermediate gear stack, only slide it back 2-3 inches..
Flip the entire differential and slide it back into the trannycase..
Slide the intermediate assembly back in place, bolt it up, check for backlash and you are finished.
I did one in an hour a few weeks ago.
BTW, TC The 901 is NOT the tranny you want for drag racing! The weird shift pattern coupled with the fact that first gear is non supported make it worthless for a drag applicatiion without a 5K investment in upgrades. I have busted the tranny in my 914 on THREE occasions with 181BHP and equal torque.. That was second gear, I know bwetter than to rip on first with MassIVe power!
BUT, you may find that selling the 901 gearbox and starting over with a purpose built Type I tranny with complimentary gears to the TIV engine to be more beneficial and cheaper.
To fit the engine- Thats no sweat at all....
Every single part you need is right here. www.type4store.com, including a purpose built tranny.
If you get the goodies from my store you don't need any modifications made to them- The engine will bolt right to the tranny and right into the STOCK uncut engine bay.
Its all very simple and all you need is a 119pc tool set from Sears if you do it my way.
The TIV is a great Speedster engine- No matter what size it is!
The 901 ring gear (diff) can be flipped. I have done it easily.
Remove the tranny side cover..
Remove the intermediate gear stack, only slide it back 2-3 inches..
Flip the entire differential and slide it back into the trannycase..
Slide the intermediate assembly back in place, bolt it up, check for backlash and you are finished.
I did one in an hour a few weeks ago.
BTW, TC The 901 is NOT the tranny you want for drag racing! The weird shift pattern coupled with the fact that first gear is non supported make it worthless for a drag applicatiion without a 5K investment in upgrades. I have busted the tranny in my 914 on THREE occasions with 181BHP and equal torque.. That was second gear, I know bwetter than to rip on first with MassIVe power!
BUT, you may find that selling the 901 gearbox and starting over with a purpose built Type I tranny with complimentary gears to the TIV engine to be more beneficial and cheaper.
To fit the engine- Thats no sweat at all....
Every single part you need is right here. www.type4store.com, including a purpose built tranny.
If you get the goodies from my store you don't need any modifications made to them- The engine will bolt right to the tranny and right into the STOCK uncut engine bay.
Its all very simple and all you need is a 119pc tool set from Sears if you do it my way.
The TIV is a great Speedster engine- No matter what size it is!
WOW! ! !
Thanks, Jake. Thank you VERY MUCH ! ! ! !
I can't believe that you would be so free with your information and take the time explain it so clearly. A LOT of fellows just aren't as accomodating, cool with what they know.
I appreciate this info VERY MUCH!
TC
Thanks, Jake. Thank you VERY MUCH ! ! ! !
I can't believe that you would be so free with your information and take the time explain it so clearly. A LOT of fellows just aren't as accomodating, cool with what they know.
I appreciate this info VERY MUCH!
TC
I just wanted to clarify something. Steve and I (angela) are both car nuts. The account we have is "Steve Lane - Laneco" but in actuallity I do most of the writing as I type 107 wpm. Not always perfectly accurate as on a prior post here I meant to type SHOP and actually typed SHOW (I edited/corrected).
When I wrote in that swapping the ring/pinion was easy to do (and Raby confirms) it was me that wrote. That's why my name is on the end of the post. We normally do not post on the speedster site so the nice people here don't know us and are unaware that most of the posts are from me (and are always signed by me).
Raby points out, correctly that this transaxle is not really suitable for drag racing. He cites the actual weakness in the first gear from a mechanical standpoint. Allow me to point something else out. The 1-2 shift across the dogleg is abysmally slow. A hammered shift and you will lunch the tranny. The last thing you want for drag racing. Get a tranny with the traditional shift pattern. You'll be much quicker and won't be swapping parts between runs. The rear shift in a rear engined car is WAY better than the side shift. More precise, quicker, easiser to adjust etc.
Take Raby's advice. Don't use a side shift 914 for drag racing.
angela
When I wrote in that swapping the ring/pinion was easy to do (and Raby confirms) it was me that wrote. That's why my name is on the end of the post. We normally do not post on the speedster site so the nice people here don't know us and are unaware that most of the posts are from me (and are always signed by me).
Raby points out, correctly that this transaxle is not really suitable for drag racing. He cites the actual weakness in the first gear from a mechanical standpoint. Allow me to point something else out. The 1-2 shift across the dogleg is abysmally slow. A hammered shift and you will lunch the tranny. The last thing you want for drag racing. Get a tranny with the traditional shift pattern. You'll be much quicker and won't be swapping parts between runs. The rear shift in a rear engined car is WAY better than the side shift. More precise, quicker, easiser to adjust etc.
Take Raby's advice. Don't use a side shift 914 for drag racing.
angela
Thanks for the answers to my question,it all helps in coming up with a plan.
Woody
Woody
I read that the 901 is longer than the T1 trans and that the 914 vsn of 901 required fabrication of some kind of mounting brackets to install (where the real 901 was easier to mount). Which axels would you use? T1 or 914? There is a good write up on the 901 install at
aircooled.net/gnrlsite/resource/articles/porsche5spdconv.htm
www.tunacan.net/t4/tech/trans.shtml#porsche
www.cal-look.com/tech/porsche.shtml
aircooled.net/gnrlsite/resource/articles/porsche5spdconv.htm
www.tunacan.net/t4/tech/trans.shtml#porsche
www.cal-look.com/tech/porsche.shtml
The 901 trans is a great combination with a performance Type I as well, perfect ratios for about 150 hp or more. The 901 rear shift trans has a shifter seal that is unique for a VW application, same part number different seal, make sure that you change the seal BEFORE you install the trans or it will leak. Don