Product Rev. Sein System Shift Kit
08-12-2002, 10:54 AM
#1
Instructor
Thread Starter
Product Rev. Sein System Shift Kit
I just wanted to post my impressions of the Sein Systems shift kit. This kit retails for around $140 and is essentially the same as the much more expensive Robotek kit ($299). I installed the shift kit, a factory short shifter and a Momo shift **** this past week to try and clean up the shifting on my 86 Carerra.
The kit when it arrives seems a little thin part wise but everything you need to complete the kit is present, well manufactured and is accompanyied by very well illustrated and written instructions. There was absolutely no guessing needed. If you install a factory short shift kit as well there is some minor cutting necessary of the shifter housing but it can be accomplished easily with a fine-tooth jig saw or dremel. It does take some paitience to assemble the parts in the sometimes-tight housing, however it fits exactly as advertised. One tip, the kit mentions the need to purchase new porsche c-clips, however a trip to your local hardware store will save you both the time and money and a standard c-clip (or quick clip) will suffice. A second tip, use both washers on the tension spring with the factory short shift kit, it increases the tension and gives a uniform feeling to the 1-2 gate with respect to the 5-r gate.
As for performance, a world of difference. The Sein kit will eliminate mis-shifts short of someone just jamming the shifter around the gate. The kit springs the shifter into neutral at the 3-4 gate and helps prevent accidental downshifts into 1 or 2. This is done by creating the same gate that prevents accidental 3-r shifts by requiring you to come diaganally through neutral from 3rd to get to second and the smooth transition from 4th to 3rd vs. 4th to 1st will help on that mistake. Further, to make it to the 1-2 gate you need to be very deliberate in your movement to the left.
On the road, the shifting became effortless and without hesitation once you gained the confidence you would not be placing that level in the wrong place. I took her out on some winding backroads near my home that require constant rowing of the shifter and the shifting became second nature.
The short shift kit, contrary to popular belief, feels like it shortens the shift more than 10% by reducing the engagement by one "notch". The shifter pops out of gear then one more notch and you are in.
Momo vs. stock, no question. I purchased the momo airleather aluminum which is a larger round **** with a flat top. With my large hands this felt very comfortable and provided great feedback. The price is a little high, but beat your supplier up a bit as there is incredible markup on these things (>50%).
I hope this helps anyone looking to clean up the shifing in their 915 tranny. Feel free to e-mail me with any other questions.
Marc
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
The kit when it arrives seems a little thin part wise but everything you need to complete the kit is present, well manufactured and is accompanyied by very well illustrated and written instructions. There was absolutely no guessing needed. If you install a factory short shift kit as well there is some minor cutting necessary of the shifter housing but it can be accomplished easily with a fine-tooth jig saw or dremel. It does take some paitience to assemble the parts in the sometimes-tight housing, however it fits exactly as advertised. One tip, the kit mentions the need to purchase new porsche c-clips, however a trip to your local hardware store will save you both the time and money and a standard c-clip (or quick clip) will suffice. A second tip, use both washers on the tension spring with the factory short shift kit, it increases the tension and gives a uniform feeling to the 1-2 gate with respect to the 5-r gate.
As for performance, a world of difference. The Sein kit will eliminate mis-shifts short of someone just jamming the shifter around the gate. The kit springs the shifter into neutral at the 3-4 gate and helps prevent accidental downshifts into 1 or 2. This is done by creating the same gate that prevents accidental 3-r shifts by requiring you to come diaganally through neutral from 3rd to get to second and the smooth transition from 4th to 3rd vs. 4th to 1st will help on that mistake. Further, to make it to the 1-2 gate you need to be very deliberate in your movement to the left.
On the road, the shifting became effortless and without hesitation once you gained the confidence you would not be placing that level in the wrong place. I took her out on some winding backroads near my home that require constant rowing of the shifter and the shifting became second nature.
The short shift kit, contrary to popular belief, feels like it shortens the shift more than 10% by reducing the engagement by one "notch". The shifter pops out of gear then one more notch and you are in.
Momo vs. stock, no question. I purchased the momo airleather aluminum which is a larger round **** with a flat top. With my large hands this felt very comfortable and provided great feedback. The price is a little high, but beat your supplier up a bit as there is incredible markup on these things (>50%).
I hope this helps anyone looking to clean up the shifing in their 915 tranny. Feel free to e-mail me with any other questions.
Marc
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
08-13-2002, 02:17 PM
#2
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i cant remember what tranny is in your car is it the 915. if so where can i get the kit. i already have the short throw shifter in and want to try to help my 915 with shifting. thanks John
08-13-2002, 05:47 PM
#3
Instructor
Thread Starter
J, my car has the 915. The web page is <a href="http://www.seinsytems.com" target="_blank">www.seinsytems.com</a> I believe. If this link does not work let me know and I will check at home for the correct address. Be sure to let them know you have the factory ss kit as the spring is different. Good luck!
J, is that a custom 3.2 turbo, if so how did you do it? I was thinking about custom forced induction for my 3.2.
Thanks,
Marc
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
J, is that a custom 3.2 turbo, if so how did you do it? I was thinking about custom forced induction for my 3.2.
Thanks,
Marc
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
08-13-2002, 07:38 PM
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Marc, I couldn't agree more. The Sein Systems shift kit is one of the best mods I did to my 911. I had previosuly installed the Weltmeister SS kit and did not have dremel and material from the shifter housing. The kit makes the shifting precise and virtually worry free.
08-13-2002, 10:45 PM
#6
Race Car
It looks like a really good product. I'm bummed I jumped on the Robotek before Sherwood came out with his.
<a href="http://www.seinesystems.com/" target="_blank">Here's a good link.</a>
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08-14-2002, 11:59 AM
#8
Instructor
Thread Starter
MIK, while you got her apart you might as well replace the bushings as 20 year old soft plastic does not tend to hold up well under stress!
Two other pointers on the kit, first get yourself some white lithium spray grease, it makes things neater and lasts a very long time. Second, you must weld the part on unlike the clamp in the advertisement, this is the subject of a technical bulletin that they send with the product.
Last, the shaving of the housing is not a function of the ss kit but the arm necessary to contact the spring mechanism so I dont think it will matter which kit you use.
Good luck to all!
Two other pointers on the kit, first get yourself some white lithium spray grease, it makes things neater and lasts a very long time. Second, you must weld the part on unlike the clamp in the advertisement, this is the subject of a technical bulletin that they send with the product.
Last, the shaving of the housing is not a function of the ss kit but the arm necessary to contact the spring mechanism so I dont think it will matter which kit you use.
Good luck to all!
08-14-2002, 12:20 PM
#9
Sounds like it cleans things up really well...how much of a reduction in throw do you feel it provides? I am interested in cleaning mine up, but also reducing that 1-2 gear stretch... In my '84 Carrera the **** when in second almost butts right up against the corner of my seat.
Thanks for your info!
Thanks for your info!
08-14-2002, 02:44 PM
#10
Instructor
Thread Starter
BG, the Sein System kit has no effect on shift length, it only provides uniformity to the shift pattern by making it uniform and "gated". The factory short shift kit will take care of the rubbing on the seat because I had the same problem
Marc
Marc
08-15-2002, 02:01 PM
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[quote][QB] you must weld the part on unlike the clamp in the advertisement, this is the subject of a technical bulletin that they send with the product.[QB]<hr></blockquote>
I agree that the clamped part should be welded, but I don't think it is a prerequisite to installing the kit. I have used mine using the "clamp" for about 5K miles of stop and go traffic as well as DE events. It's just better to weld but if you don't have a welder don't let that discourage you. In my experiece the clamp works.
I agree that the clamped part should be welded, but I don't think it is a prerequisite to installing the kit. I have used mine using the "clamp" for about 5K miles of stop and go traffic as well as DE events. It's just better to weld but if you don't have a welder don't let that discourage you. In my experiece the clamp works.
