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According to the MM docs they are very flexible and works from 280 to 390 cc. They have 12 holes, and cover up to 30 degrees.
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Phase 2 172 Sport
Wow. Very impressive 
!
!
some very nice custom parts in there! any chance you could sell copies of the lower arm files?
where did you get that clutch and how much was it?
really awesome build, congratulations!
I got this clutch from DemonTweaks and they spend near 3 months in communications with the Helix (manufacturer) to build the proper configuration with the release bearing compatible with original 172's gearbox. I think that now you can get it much faster - just ask the John Harris JohnH@demon-tweeks.co.uk about price and time!
BTW - DemonTweaks give 10% discount for ClioSport.net Club members, so it is VERY reasonable to pay just 5.00GBP for annual membership, as soon as you will return much more from the first order!
You will also need to buy 184mm flywheel at TTV Racing to use this clutch - or machine the original flywheel !!!
Monaco 172
Impressive stuff going on here, love that suspension set up and the rear brakes look immense
Engine config is:
CatCams 553 It (304/304° - 12.45/12.45mm),
CatCams adjustable vernier pulleys
Supertech uprated valve springs
Supertech valves
Solid lifters
H-beam forged Con Rods + Woessner 12.8:1 pistons
Megane RS 225 injectors on Jenvey's steel fuel rail (with M6 fittings and Teflon fuel pipe)
CatCams 553 It (304/304° - 12.45/12.45mm),
CatCams adjustable vernier pulleys
Supertech uprated valve springs
Supertech valves
Solid lifters
H-beam forged Con Rods + Woessner 12.8:1 pistons
Megane RS 225 injectors on Jenvey's steel fuel rail (with M6 fittings and Teflon fuel pipe)
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Yes, it is very good with high lift camsshafts too! Here are my most current engine spec:
Engine:
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JMS RS2 Inlet Manifold
CNC-machined cylinder head
CatCams (304/304° - 12.45/12.45mm) with adjustable vernier pulleys
CatCams uprated springs (single)
Supertech valves
Solid lifters
H-beam forged con rods with ARP bolts and ACL bearings
Clio 197 pistons (give 12.5:1 when installed with Clio 172 head)
Megane 225 injectors @ Jenvey steel fuel rail
ARP main and head bolts
Kent competition cam belt
Athena Racing MLS gasket
Pure Motorsport AirCon and PAS removal kit
Transmission:
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TTV Racing ultralight flywheel and Helix 184mm clutch
JC5-129 gearbox with Gripper LSD (30/65 ramp angle and 4.33 main gear)
Ceramic coated synchronizer rings for 3-5 gears
