Vauxhall Owners Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
Hi can anyone help me out Iv got a corsa 1.7 dti currently has a f17 gearbox fitted but the standard clutch is pants and just slips due to remap and other mods I have been thinking of doing the f23 conversion but would a c20let clutch fit or can anyone help with a better solution.
 

·
Registered
Joined
·
454 Posts
I don't think you will get a c20let clutch to fit the y17 flywheel, there are a few uprated clutches about that will fit the standard engine and gearbox that should handle 40% more torque. I have a Sachs solid drive plate in our 1.7 DTI Astra and that holds ok at 220 ft lb.
 

·
Registered
Joined
·
2 Posts
Discussion Starter #3
I looked at the clutch options the only one that seems like it will hold is a paddle clutch but I definitely want to avoid that option for drive ability as I do a lot of miles a day what mods had your dti got
 

·
Registered
Joined
·
454 Posts
It has a bigger intake and filter, EGR valve completely removed, mild porting of the inlet manifold (swirl runners only - this slightly reduces torque lower down, adds a little BHP further up and will save your clutch and gearbox), mechanical adjustable boost controller (the remap allows this without EML comining on), a MK 5 Astra intercooler (about 50% bigger), a 'modified' Cat, and a full Scorpion Stainless 2.5" exhaust system.
 

·
Registered
Joined
·
6,703 Posts
I'm not familiar with the vehicle, but the clutch needs to be considered as two parts.
The first being the friction plate, different friction materials will give different co-efficient of friction and, hence, different torque capacity for the same diameter. A 'road' 'plate will also have two springs in it - a Marcel spring which gives a progressive engagement and is usually lacking in 'paddle' or sintered plates and which can result in a slightly 'grabby' engagement. The other spring is a hub spring that has two main purposes - it dampens drivetrain-engine vigrations and it also reduces the shock loadings on the drivetrain from harsh engagement of the clutch.
The second is the pressure plate, this is basically a diaphram spring applying force to a friction ring that is attached to the pressure plate cover. There are design detail variations, but the torque capacity is approximately proportional to the spring strength. Different vehicles may have the same pressure plate design, there is certainly a lot of interchangability between families.

For you, If you're doing a lot of open road driving, you shouldn't need a Marcel, but if you're doing much stop-start driving it does make it much easier to use the clutch.
I would suggest contacting one of the clutch specialists - I mean actual people who know about clutches, not the BS artists with big advertising budgets - and ask if they can build you a cover with an uprated diaphram spring - you may be pleasantly surprised at the cost, if they can do it, as they should be able to use off-the-shelf parts. I would look at keeping the friction plate you have, if it is of good condition and quality - some cheap 'pattern' plates may be poorly made and actually break up under higher loads, heck, some OEM GM stuff used to be complete crap, don't know about modern stuff.
 
1 - 5 of 5 Posts
Top