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the old spec did not want to play with the 6766 very long
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we put it on the high setting so we will see how it does looks like mixed reviews on what works best
Best of luck!
what stage spec? what are you putting down and how long did it hold?
spec stg3 plus and the car was cobb tuned stock turbos with fbo and on drag radials with a lot of track days. installed the AD Engineering kit with the 6766bb kit and made a few pulls on the dyno and found the clutch slipping. power on the dyno was mid 500 on the second pull so we stopped tuning and ordered a clutch.Quote:
Originally Posted by Torgus
WTH? That clutch should slip at such a low power figure.Quote:
Originally Posted by cloakedm3
Did your trans mount flush to block without using bolts when you installed the twin disk? Do you have any clutch dragging is lack of disengagement?
was spec 3 with a stock (LUK) flywheel by chance??
Hmmm the stage 3+ is listed to handle 671 flywheel TQ. So figure 570 ft lbs or tq at the wheels give or take...
install went great and the clutch is working with no issues on the test drive should have the car back on the dyno in na week.Quote:
Originally Posted by The Ghost
not sure what happened to the clutch and yes it had the spec3 plus with the factory luk flywheel. that was installed by another shop not by me. we picked this twin up from jake @ motiv as soon as we noticed an issue i figured the 3plus would have held better alsoQuote:
Originally Posted by Torgus
i went thru two spec 2+ clutches that slipped with only 430tq using the LUK after proper break in, on the 3rd one went with SMFW, been holding ever since.
look forward to hearing how the twin works out!
That's an interesting data point. Perhaps your DMFW wasn't resurfaced. I had a 2+/DMFW with 500wtq for 20k miles that never slipped. I resurfaced it though.Quote:
Originally Posted by cadillacgrills
Besides going great, did it sit flush against the block without using bolts? What TOB setting did you use?Quote:
Originally Posted by cloakedm3
both DMFWs were brand new when spec 2 was installed, both spec 2 were new as wellQuote:
Originally Posted by The Ghost
took some work to get it in flush i don't like to use bolts to pull them in together. and its on the hight settingQuote:
Originally Posted by The Ghost
Ive made 680wtq with spec stage 3+. No idea what happened there lol.Quote:
Originally Posted by Torgus
Not sure but now I know we can throw fuel and some boost at it and let it eat :-)Quote:
Originally Posted by fastgti69
Ours also went together fine, it seems there may be some manufacturing variance as some people are having issues and some are notQuote:
Originally Posted by cloakedm3
The spec 3+ for dmfw are a joke compared to the spec 3+ with smfw. Our 135 6262 car has a 3+ with solid steel and that clutch feels great. Firm pedal and clamps nicely. The 3+ with dmfw was super soft pedal (as soft or softer than stock with a large engagement window).They may both say 3+, but they are far from the same.Quote:
Originally Posted by fastgti69
Ahh, that's the bit of information that is very important. Was wondering what was going on there lol.Quote:
Originally Posted by andy_divers
@cloakedm3 So you didn't snap any pressure plate bolts or feel like you over streched them out? Does the car creep from a stop in first gear? Are you having any difficulty shifting? To confirm AGAIN you placed the TOB on the high position correct? About where does the clutch engage... Low off floor, mid pedal height or mid-high pedal height (stock)? Also how many miles do you have on it?
Sorry for all the questions... Some of us are having issues with the twin discs :-/
[QUOTE=JMARS;604638]@cloakedm3 So you didn't snap any pressure plate bolts or feel like you over streched them out? Does the car creep from a stop in first gear? Are you having any difficulty shifting? To confirm AGAIN you placed the TOB on the high position correct? About where does the clutch engage... Low off floor, mid pedal height or mid-high pedal height (stock)? Also how many miles do you have on it?
Sorry for all the questions... Some of us are
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@Sticky Please delete the previous post.
@cloakedm3 So you didn't snap any pressure plate bolts or feel like you over streched them out? Does the car creep from a stop in first gear? Are you having any difficulty shifting? To confirm AGAIN you placed the TOB on the high position correct? About where does the clutch engage... Low off floor, mid pedal height or mid-high pedal height (stock)? Also how many miles do you have on it?
Sorry for all the questions... Some of us are having issues with the twin disc install/operation :-/
http://www.bimmerboost.com/attachmen...id=40846&stc=1
no we didn't snap any pressure plate bolt or stretch them. what did you TQ the bolts to? the car does not creep at a stop the engagement is very good and yes its on the high side setting. i would like the engagement to be more at the top of the pedal but its more in the low to middle we will see how it goes. no issues with shifting shifts smooth
Give it a couple hundred miles and report back.Quote:
Originally Posted by cloakedm3
Besides the bolt issue, this sounds like our clutch, no install issues, and I am 100% confident the higher TOB setting will fix our low pedal engagement, and I have never once had it hard to get into or out of gear. Shift and clutch engagement is very smooth. We sound like are the minority thoughQuote:
Originally Posted by cloakedm3