gearboxes
- Thread starter superls
- Start date
judging by the profile of pressure plate assembly, I think this would be tricky...I recon it would be better to use an off the shelf clutch part and do any mods to the fly wheel (ie drill & tap new holes to accept the larger clutch parts as an option (as wrenchable suggested below)
As a separate thought, re-drilling the 5-6 bolt crank holes in the flywheel would probably not be possible/ unwise due to overlap of the new hole positions against the old ones (hexagon over pentagon)
SO, to summarise this thread (correct me if I’m wrong)
1. The CG 1.3 and old 1.0 transmissions each properly bolts up to the MA series engine block (from Wrenchables tests)
2. The CG 1.3 and old 1.0 transmissions each properly mount to the K10 chassis mounts <rear & UK near-side> (from Wrenchables tests)
3. CG 1.3 and post 98 CG1.0 transmissions have a larger diameter input shaft and so need their own clutch
4. the newer / larger input shaft gearboxes take the 180mm clutch plate
5. The only thing stopping this as a straight swap solution is the flywheel interface
A. Will a pulsar 190mm plate? Fit the larger input shaft....even more potential for off the shelf upgrade availability)
It looks to me that everything here could be off the shelf bar the flywheel?
How about having the MA 5 bolter flywheel customised/modified to accept 1, 2 or 3 different sized clutch pressure plate assemblies?
any ideas on how practical this would be for a skilled machinist (somone who has the tools to keep everything centered properly etc. and any guesses as to much this ssort of flywheel mod would be likely to cost?
<EDIT> or may be somone similar to these chaps could edit their 6bolt patern to a five bolt?.....this one is alliminum though and is also on OZ!!
http://www.alloyrace.com/productview.php?pid=13&ppid=flywheels
<another EDIT> are our flywheels cast iron?
DRAT!....
...I wouldnt reccomend drilling & tappinng a casting that spins as engine speeds......might seem ok but could cause a dangerous failure if the flywheel (and most of the engine aswell as bits fly) later down the line.
I will check with my resident metallurgist on this one and get back...
otherwise its looking like a custom flywheel to do this mod
I think Wrenchable did confirm that the box fits the block and chassis in his earlier posts didnt he?
K10
Ex. Club Member
just a point on re-drilling flywheels- it is do-able, but I'm not sure on the details.
http://www.omicron.uk.com/sera/forum/index.php?showtopic=2923&st=0
2 thirds down that page ^^^ you can see where the fly has been machined- but note it was only a hole diameter and slight PCD shift, nothing horrendously complicated. Also the flywheel is off a TOM's built race engine, so could be a billet machined one not a cast item with a machined face.
http://www.omicron.uk.com/sera/forum/index.php?showtopic=2923&st=0
2 thirds down that page ^^^ you can see where the fly has been machined- but note it was only a hole diameter and slight PCD shift, nothing horrendously complicated. Also the flywheel is off a TOM's built race engine, so could be a billet machined one not a cast item with a machined face.
