[trond]

If you go for the Kehein FCR's, do yourself a favor and mount them on Malossi short intakes. That eliminates the plumbing and the fuel pump since it will all be gravity feed. It also gives you more HP according to folks I spoke to before I did it on my '96 SS. That bike turned into a beast. Estimates from BCM were that it made 85-90 hp at the rear wheel. I never had it dyno'ed. Believe me it was strong. Should add that was only part of the mods. Also did the 944 kit w/hc pistons, DP CF exhaust, etc.

bruce19

I am ready to order. I already received the Malossi manifolds. Now, on the front cylinder, do you have a downdraft FCR or a side draft ? I am really anxious to know if a side draft works or not as this is the only option with the 37mm. If I need downdraft I have to get 35mms or 39mms

 

[trond]

correct. Norwegian in Egypt ! best place in the world for offroad ! Not a good place for roadbikes though as the traffic here is dangerous.

Miss my roadbike though and need to get this question of downdraft vs side draft sorted to have them ready for when i get home end June.

Some say you must use downdraft I think, and some say use sidedraft I think. i need to find someone who has Malossi manifolds and FCR and will actually tell me what works !! Like BRUCE19 !!! Hello bruce, care to answer ? Do you have downdraft or sidedraft on that front cylinder ??

(If sidedraft I will order two sidedraft 37s tomorrow. If downdraft I don't know, either 35s or 39s)

 

[trond]

My heads are properly ported and polished, with larger valves, by Baines Racing and MEZ Porting in the UK . Also light flywheel, lightened and dynamically balanced pistons and crank. The reason for wanting flatslides is throttle response, not top end power. I had the primitive Mikuni TM flatslides earlier and they were a hassle to set up, but had fantastic throttle response, so much better than the Dell'orto pumper carbs (that are not bad at all). Nothing however beat properly set up flatslides. But you are right, the carbs are definitely not limiting top end power with these engines.