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MaseratiForumMaserati Cars3200GT, 4200 Coupe/Spyder, GranSport does asr stop wheel spin above 70?

does asr stop wheel spin above 70?

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25/1/2012 21:25:26  

Posts: 90
Since: 5/2/2010
Region: Aberdeen
Status: online
I have a strange situation on my 3200. drive hard though the gears, as comes on. Pull hard in any gear and no clutch slip. On the motorway above around 70 give it the beans and rev rise dramatically, no consequent acceleration. as this dosen't happen at lower speeds regardless of throttle or revs i don't think it is the clutch. could the wheel be spinning up? Any thoughts, back tyres are about 2 mm and it was around 9 degrees C. Regards Ross
25/1/2012 21:59:23  

Posts: 775
Since: 19/8/2007
Status: offline
If clutch is slipping, it will occur at max engine torque when engine is under heavy load ie higher gears rather than lower. Lower gears progessively gear down the load on the engine and therefore the clutch. FYI, max torque is developed @ 4,500 rpm so this is the starting point. Max load is applied with full throttle, preferably on an incline, below 4,500 rpm and accelerate through this point.

Conversely, the wheels will loose traction far more readily the lower the gear as you are multiplying the torque depending on the gear ratio which also reduces load on the clutch.

There is no mistaking wheel spin as you would certainly feel this in an instant, with or without traction control.

hope this helps   

< Message edited by Nigelo -- 25/1/2012 22:00:40 >


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You can lead a horse to water but you cannot force it to drink
26/1/2012 10:37:25  

Posts: 90
Since: 5/2/2010
Region: Aberdeen
Status: online
lol, I was hoping that was not going to be the case, looks like I need a new clutch, 4500 revs is where the problem is worst.

Although I drive in town nearly all the time so it does not affect me in normal day to day driving.  I drove on the dual carrage way at a reasonable speed last night accelarating when necessary etc with no worries, this has only happened since my major service, not that i think this was the key just that the car is a lot quicker than before (the fuel filters were clogeged up), and this may have had an impact, but at the end of the day it sounds like I need a new clutch.

How much damage to my wallet should I expect?

regards

Ross




< Message edited by rlowdon -- 26/1/2012 10:38:12 >
26/1/2012 13:24:25  

Posts: 775
Since: 19/8/2007
Status: offline
The complete 3 piece OEM clutch kit is available from Eurospares for approx £500. Fitting is on top, of course, and will depend on where you go with Independent Maser Specialists (eg Grimaldi) being the preferred choice

Even though the clutch may not appear to slip during "normal" driving, strongly suggest you get it checked and if confirmed, replaced asap as clutch slip will ultimately damage the flywheel

hope this helps

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You can lead a horse to water but you cannot force it to drink
26/1/2012 21:11:54  

Posts: 38
Since: 21/4/2011
Region: Derbyshire
Status: offline
I've just had the clutch replaced on my GS Spyder at a main dealer.  They recomended having the fly wheel changed as well.  If not they said the clutch would need replacing even sooner.  I am confident that they where genuine.  Fortunately most most of the cost was covered by the warrenty but it still hurt.
27/1/2012 9:45:26  

Posts: 775
Since: 19/8/2007
Status: offline
We are discussing a 3200 not a 4200 and my advice remains as stated

hope this helps

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You can lead a horse to water but you cannot force it to drink
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