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Post by ZOOMER46 on Dec 17, 2006 20:03:29 GMT -5
 at last a pic of a 4 valve head ! thanks to jasper for his help.  check out the tiny valves! |
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Post by I Heard A Rukus on Dec 17, 2006 21:19:21 GMT -5
That's sweet!! I'm going to try to source one out, I know those make more power, between the better flow and the higher compression. I mean just look at the differance in the combustion chambers:  KP |
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Post by Jasper on Dec 17, 2006 23:24:39 GMT -5
hey zoomer nice to see you got your pics up by youself successfully, even though I didn't help you haha
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Post by ZOOMER46 on Dec 18, 2006 5:00:55 GMT -5
but you did give me some options jasper, nice comparison shot i.h.a.r.  and here's the other side, as you may know the 2 v b.s cam will not fit this head. her's the head part no.   and also valve part no's.the exhaust 1 is twice as expensive as the inlet.  exhaust side     will bring more of the injection system s.a.p |
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Post by chanito on Dec 18, 2006 8:56:28 GMT -5
 It looks like is a straight swap, all you need is the complete head Assembly and the 4valve piston and you should be in business, maybe it is worth to do a small 4valve piston run and contact Ron Ayers so he can get the heads and do a nice 4valve ruckus  Thanks for the 
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Post by Dandy Dan on Dec 18, 2006 11:47:17 GMT -5
Awesome pics! I've been dreaming of pics like this for a long time.
Regarding the swap, The cam area looks really similar but I'll take your word for it that they're different Zoomer. Other than that, it should be a straight swap with the only issues being price, availability and the fact that the BB piston currently doesn't work.
Did you order this head from your dealer Zoomer? Why...Is it for somebody? If you could give us a rough idea of the price that would help us to know how worth it is it. The problem is that if Chanito doesn't make a BB for this head then you're essentially choosing the 4V head over the H.O. cam and B.B. piston so that's probably similar amount of $$$ for less performance. If Chanito does make a BB though you could get the cam reground yourself and then have the ultimate Ruckus engine once you fix that intake port that sucks on all Ruckus.
Chanito: How small of a piston run can you do now that the intial run has happened? Could you do like 6?
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Post by Dandy Dan on Dec 18, 2006 11:47:50 GMT -5
Is the OEM Compression spec the same?
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Post by I Heard A Rukus on Dec 18, 2006 13:23:51 GMT -5
Given the space in the combustion chamber between the two heads I'd have to say if you put one of these on our 2V engines you'd get a bump in compression. I would gladly pay a few hundred dollars for this swap if:
we can get a BB 4v Piston
And a 4v aftermarket cam
In any internal combustion engine since the 60s 4 smaller valves have been better than 2 large ones.
KP
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Post by chanito on Dec 18, 2006 13:27:49 GMT -5
 12 is the minimum run for the 4valve piston, and there is no way i will do it unless there is at least 6 sold  And yes the compression is higher with the 4 valve head, so the big bore piston for the 4valve is still 12.5 to 1
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Post by sanjuro62pt1 on Dec 18, 2006 13:40:56 GMT -5
12 is the minimum run for the 4valve piston, and there is no way i will do it unless there is at least 6 sold And yes the compression is higher with the 4 valve head, so the big bore piston for the 4valve is still 12.5 to 1 You can count me in. |
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Post by Dandy Dan on Dec 19, 2006 10:03:39 GMT -5
Sanjuro, DandyDan, IHAR....that's 3...plus the dude in Europe that mailed Chanito the 4V piston and I think Zoomer46 would be in to so that's 5!
Actually, before I can commit to this I really gotta know if the 4V parts are available (ie. is Zoomer willing to ship some over?) and a rough price estimate. It would suck to have everything except a rocker arm or something because the part is discontinued.
Anyways, Hopefully Zoomer can post up a bit more pricing info so we have a better idea. The cool thing about this mod is that since we've already done the big bore, it's essentially a bolt in mod.
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Post by timberwolfmadcat on Dec 23, 2006 12:09:37 GMT -5
Given the space in the combustion chamber between the two heads I'd have to say if you put one of these on our 2V engines you'd get a bump in compression. I would gladly pay a few hundred dollars for this swap if: we can get a BB 4v Piston And a 4v aftermarket cam In any internal combustion engine since the 60s 4 smaller valves have been better than 2 large ones. KP The cam would not be hard to get. Just send Abe a stock 4V cam and he can do it, since the 2V is just a weld and regrind anyways |
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Post by Dandy Dan on Jan 1, 2007 13:46:16 GMT -5
Yeah and I could sell my 2V cam so I wouldn't even be out that much $$$. I guess the only obsticles right now are the high price of a 4V conversion and getting enough people.
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