datsunan Posted October 20, 2009 Share Posted October 20, 2009 Hi guys, I need a new clutch and have been reading some bad reviews on spec clutches and it seems to be about 50/50. I was looking at doing the spec 3+ for my 360ftlb turbo with fid alum flywheel. I wonder if the bad review are from improper installation or poor product. I am currently running the xtd clutch but its not holding 4th gear. I had the centerforce dual friction and that did not hold either. Car is mostly a daily driver and I want the clutch to last a while without eating my fw. I have read many posts but am still unsure of the spec quality any help would be great thanks Paul Quote Link to comment Share on other sites More sharing options...
MAG58 Posted October 21, 2009 Share Posted October 21, 2009 I've been getting the same, about 50/50. A few of the guys at peach parts have been running them on their turbo benz's (It's really the only game in town) and they feel grabby alright, but when the turbo gets down to business, the holding pressure on about half the clutches installed isn't much more (if any at all) than the stock sachs units. Quote Link to comment Share on other sites More sharing options...
Quin Posted October 21, 2009 Share Posted October 21, 2009 I loved my Spec Stage 3+ in my old Supra (R154 transmission). It held my 400ft/lbs all day with no issue. Quote Link to comment Share on other sites More sharing options...
datsunan Posted October 21, 2009 Author Share Posted October 21, 2009 how was driveability ? Quote Link to comment Share on other sites More sharing options...
aarang Posted October 21, 2009 Share Posted October 21, 2009 My Spec stage II let up after 1600 miles with only a few days of track use and mostly being driven on the street. It was properly installed with a resurfaced stock flywheel. I would not get another. I will say that the pedal pressure was less than a stock turbo clutch, which was nice. I now run a Fidanza flywheel with an ACT HD PP and street disk. Pedal pressure is higher than the stock clutch, but not much. I could not be happier with this setup. The engagement at first was down by the floor, but after 500 miles it is in the middle, more or less. No grabbiness, really smooth engagement and easy to drive on the street. I have not taken it to the track, yet. It is rated for 400ft lbs which is plenty for me. My car is only around 270ft lbs. I would definitely recommend this clutch/flywheel setup. Aaron Quote Link to comment Share on other sites More sharing options...
datsunan Posted October 21, 2009 Author Share Posted October 21, 2009 thanks Aaron Quote Link to comment Share on other sites More sharing options...
Kash Posted October 21, 2009 Share Posted October 21, 2009 Currently running a spec II w/ Fidanda and luv it! No issues at all, easy grab, light clutch pedal and it holds all the way to red line. Quote Link to comment Share on other sites More sharing options...
01vincer6 Posted October 23, 2009 Share Posted October 23, 2009 Spec 3+ on the ls1 turbo. Drive ability and durability is best. Quote Link to comment Share on other sites More sharing options...
datman Posted October 23, 2009 Share Posted October 23, 2009 I have a spec 11lb flywheel and a Spec 3+ clutch and never had an issue, very light on the pedal and copes with 350ft/lb all day long. Quote Link to comment Share on other sites More sharing options...
datsunan Posted October 24, 2009 Author Share Posted October 24, 2009 great thats the clutch i am looking at doing. Sure hope I don't buy another clutch that does not hold. Quote Link to comment Share on other sites More sharing options...
speeder Posted October 25, 2009 Share Posted October 25, 2009 Check this out: http://forums.hybridz.org/showthread.php?t=109674&highlight=SPEC+Clutch Vette, Viper, and Supra guys love them, but they have a really bad rep on Datsuns. Quote Link to comment Share on other sites More sharing options...
zeeboost Posted October 25, 2009 Share Posted October 25, 2009 Similar story with me: http://forums.hybridz.org/showthread.php?t=107206&highlight=spec A lot of other people with lt1 t56-styled transmissions had similar stories as well - I don't know about the other clutches they sell, but I'll never buy from them again. Quote Link to comment Share on other sites More sharing options...
speeder Posted October 26, 2009 Share Posted October 26, 2009 Go with ACT in your choice of torque capacity and be done with it. Thank you. Quote Link to comment Share on other sites More sharing options...
jgkurz Posted October 26, 2009 Share Posted October 26, 2009 Check this out:http://forums.hybridz.org/showthread.php?t=109674&highlight=SPEC+Clutch Vette, Viper, and Supra guys love them, but they have a really bad rep on Datsuns. I ran the 323 Spec clutch for a bit. It would slip and chatter as soon as boost hit and my engine torque peaked. I tried two separate new clutches before giving up on Spec. Tech support claimed the clutch was rated to far exceed my power and that there was something wrong with my installation. I had a custom clutch built next and haven't had a problem since (about three years of abuse)... Quote Link to comment Share on other sites More sharing options...
Quin Posted October 31, 2009 Share Posted October 31, 2009 how was driveability ? Matter of opinion. I loved it, most people I let drive it thought the pedal was too stiff and it wasn't very street friendly. I had a 2800 or 3200lb pressure plate with it, though. Just takes a little bit of getting used to IMO. Quote Link to comment Share on other sites More sharing options...
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