Doesn't the Capt have some spare bits?

No, not any more.....Someone must have a cylinder head.....

I'm looking at possibly adding a +2mm Throttle Body...but I need to understand how it will help my Conversion...I'm not convinced at the moment, as it has been only used on the "big power/ hot cam" conversions.
Has anyone tried one with a standard camshaft?

Well, a larger throttle body allows more flow basically.

When you get all these mods (stage 3, big bore, ported head etc) the only other intermediatary between the outside world and the inside of your engine is the throttle body.

The larger that is, the more that can flow through it.
I've read on here that people get some positive gains from a larger TB.

Oh, and the cams... they come in different shapes offering different 'degrees' of angle.
The shape of the cam determines when the valves open/close and for how long they are open for.
Say for example, on the intake stroke, you want the exhaust valves to close pretty much top dead centre, and the inlet to open at top dead centre.
Obviously, the exhaust must be closed before the intake opens otherwise you'll get blow back through throttle body and I've stood next to car carbs when they've backfired through them.
Trust... I thought I needed a change of underware after that!

So how the cam is ground and shaped changes all of this. There is no 'Ideal' either as it depends on what you're looking for, whether you want top end power or low end grunt.

I honestly couldn't tell you how the shape of the cam affects the power though

I meant that I didn't think the +2 throttle body would be as beneficial on my conversion, than on ones with hot cams. I would like to know if it would benefit me tho.....or if no information on that, I may just have to try it Daz!

personally, I'd have both throttle body bored and a hot cam, simply because I love revving the tits out of the engine and thats where the most power is made with that setup.

For yourself, someone who doesn't rev the nuts of the bike, a hot cam would be detrimental as you'd rarely be in the band where most the power is produced.

as far as I know... a bored throttle body would be beneficial regardless of the cam.

Ok, opinions are valued, thanks.

I think the standard cam has a really nice map curve, and is so useable at low throttle openings.......I can't see a reason to change it! Good design in my books! Very easy and drivable. Now, IF there was a cam below the Mudplugger/Stage 1, I would be very interested, but at the moment, that is a standard cam.

If I was racing it, maybe stage 2 (really hot cams are difficult to get the best out of...you need Close Ratio gears, you'd be upping the rev limiter, etc etc. ) But you would still want "pull" from say 3500 revs. And it will need a bit more attention....

As it is, I think I will be happy with the outcome.

Hey, I have just seen the OTR +4MM headers...oh no!

I wonder if they are "matched" to the head, or if they are the standard size bore, going out to 4mm.....hmmm...only trouble is, I don't really want to deal with OTR. I have had three exhausts made up on other projects, so I could just go for custom headers.

I could get my head matched up to some bigger bore headers.......and link pipes....

You need to read the other big bore threads, all the mods you are talking about have all been done with dyno results.

I think I'll have to pull my finger, and join the Supporters Club!

Alot of the information on this site is only available to Supporters, and apparantly its all the juicy bits.

Well worth a tenner methinks..........

About bloody time :toothy3: