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Old 10-15-2012, 09:59 PM   #16
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Thanks guys will keep my head spinning just looking for enough track horse power!


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Old 10-18-2012, 08:43 PM   #17
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Thanks guys will keep my head spinning just looking for enough track horse power!


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Your gonna have pleanty of Track HP on paper my tune was 128hp and the first time on the track with my "F" my best time of the day was 11.35 @119.85 mph
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Old 11-05-2012, 10:57 AM   #18
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I can say it's very streetable at 150HP, but that took a 1402 motor and SE II cams. If you are talking about a NA motor you'd be getting on the short side of reliable in that range (IMHO). You'll either be going to bigger pistons or an even longer stroke, and both have seen some reliability issues. Now if you turbo it with a mild engine upgrade (and def. NOT SE II cams!) you might see it and have it be reliable. Rod (Member RSC) is the turbo king around here. Lane (Member Lane) can tell you each and every one of a turbo'd bikes limits
So basically what I got out of all this is if I intend on a supercharger, do not supercharge with stage 2 cams. Why is that? That doesn't seem like its pushing the engine too much. What about 58mm throttle bodies? Are they ok to run with a supercharger? I'm pretty much done cosmetically with the bike so now it's time to soup it up.

maybe i need to approach my question this way. what can i do performance wise with a supercharger? headwork? stage II cams? 58mm throttle bodies? 26t pulley? are there other options ( i dont mean a turbo or big bore)?


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Old 11-05-2012, 11:56 AM   #19
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Assuming the original cam is competent (and it does seem to be) all another one can do is move the power around the rev range. Presumably you have a Road Rod for sports touring, and all the aftermarket cams are designed to move the power up the rev range (which of course means more of it). So... Why do you want another cam?

I haven't got them, but the Harley stage II cams seem very competent. You'll get more top end performance at the expense of the midrange. If that's what you want.

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Old 11-05-2012, 04:33 PM   #20
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Supercharger, ie. forced induction, basically negates the need for more radical cams and larger TB's.

The reason for those mods is to put more charge into the cyclinder which a SC or TC do naturally.

Typically for an otherwise stock engine a good SC or TC install provides some of the most HP with the least additional wear of engine components than radical cams, and an engine that doesn't run finicky at low RPM's
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Old 11-07-2012, 10:30 AM   #21
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Supercharger, ie. forced induction, basically negates the need for more radical cams and larger TB's.

The reason for those mods is to put more charge into the cyclinder which a SC or TC do naturally.

Typically for an otherwise stock engine a good SC or TC install provides some of the most HP with the least additional wear of engine components than radical cams, and an engine that doesn't run finicky at low RPM's
^^ Here's your explanation. The SE II CAMS have a long duration and a lot of overlap - so with forced induction you're going to essentially just push more of your charge right out the exhaust before you compress it. Take a look at some of what Jan-Dirk has done, using only stock cams. With cam timing and some creativity you can build a great top end for an FI motor with no more than stock cams.

EDIT: I'd also add that (IMHO!) a big bore motor puts more charge into the cylinder "Naturally", there's nothing at all natural about a blower !
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Old 11-07-2012, 10:46 AM   #22
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also most people are running turbo not supercharger. There is a difference, do some research on supercharger before you spend the $.
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Old 11-07-2012, 11:23 AM   #23
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Quote:
Originally Posted by VrodPete View Post
^^ Here's your explanation. The SE II CAMS have a long duration and a lot of overlap - so with forced induction you're going to essentially just push more of your charge right out the exhaust before you compress it. Take a look at some of what Jan-Dirk has done, using only stock cams. With cam timing and some creativity you can build a great top end for an FI motor with no more than stock cams.

EDIT: I'd also add that (IMHO!) a big bore motor puts more charge into the cylinder "Naturally", there's nothing at all natural about a blower !
SC's and TC's are compressors and by the "nature" of their operation they compact more a higher pressure charge into a given space

Personally love and believe in Turbo's. Had T'bird Turbo coupe in 80's and turbo diesel truck now. Simple reasonably trouble free devices which give alot of additional performance without excess strain on valve train components.
Haven't felt the need to add one to my Rod, but my Mazda 3 on the other hand, hmmmmm..........
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