Deus...

Hallo Stew,
hallo stew
i know that cilinder/head, it is on one of my motors, we used to import them till dec 2005. wonder what deus is charging for it. most of our customers woren`t prepared to pay that kind of money for it(2007,50 euro for the head, that is 19% tax and shipping included)But in my opinion it`s verry well worth the money.
BTW it is sorry that Daytona does not sell the bigbore kit
anymore, so if you can, get it
i can give you all the pecs if you want.

regards sjef

Hallo Stew

here are the specs for the cylinder bigbore kit:
made of AC4C-T6 aluminium
Bore 91mm
JE piston 91mm
cast iron liner diam 95 mm
strenghtened cilinderwall

translation from the catalogue:
The 91mm big bore of circular big fin adoption of 210mm of cylinder outer diameters. If it combines with a high port head, the engine appearance of the classic racer of former years is reproducible in a square shape head and a round shape big fin cylinder. 400 cc vehicle raises 437 cc and 500 cc vehicle to 546 cc. Furthermore, strengthening specification which made the cylinder trunk part meat thickness. 95mm of sleeve outer diameters. It is unprocessed in a normal crank case at 93.75mm of skirt outer diameters, and wearing is possible. A sleeve is the highest grade quality of the material adopted also as a high compression turbo-diesel engine. A cylinder main part is AC4 C-T6 processing. The hemisphere type aluminum forge piston excellent in combustion efficiency. It is attached in 1.2mm piston ring . (Normal head and high port head correspondence) The set of a cylinder, a piston, a piston ring, a gasket set, a piston pin, and a piston pin clip.

For the high port cylinderhead:
- Finishing [ quality-of-the-material AC4C and heat treatment T-6 ]. - Finishing [ a valve and valve spring inclusion ]. - The set of a cylinder head main part, a cylinder head cover, a gasket set, a valve, a valve spring, titanium retainers, prepared for 2 sparkplugs, and the cable holder for FCR cabs. * Normal carb and CR carb and the normal air cleaner BOX cannot be used. The exchange necessity for FCR 37 and 41 and TMR 36 and 40. * Normal piston use is impossible. Those with the necessity of changing into the big bore of the high comp type of bore size diam 89mm?phi91 besides our company big bore cylinder kit (28444). * The cam shafts which checked conformity are our company street / high street, YOSHIMURA:ST-1, ST-2, and megacycle 251-40 (251-30). In use of other cams, please use a camshaft with a valve lifts of 12.5mm or less. if the megacycle 251-30 cam is used, beware of higher valveseal wear. In the formation of a twin plug, an ignition coil is for TZ250 (3LC-82310-00). A plug cap should use the object (21130-1071) from a kawasaki zephyr. In the case of the vehicles of SR400 (1JR-285000 or before) and SR500 (1JN-229000 or before), it is necessary to exchange a set of electronic autoparts of the circumference of engine, such as a CDI unit, for the thing after 3HT(s)5 or 3GW6. Moreover, it is necessary to make a bracket himself for attachment of an ignition coil. Please ask for details. As spark plug use a NGK CR8E. Simultaneous use with a NORTON type aluminum tank (40837) and a BSA type aluminum tank (24206) is impossible. (It interferes in a fin.)

Higher& bigger ports, R&Dvalve springs, titanium retainers inletvalve 47 mm outletvalve38mm

if there are any questions feel free to ask

regards sjef

One other thing Sjef, why can't you use the Kei Hin CR carby with these heads?

To me, the FCR always looks strange slanted back at an angle on the SR's...surely it would affect the available fuel height in the bowl?

SR