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Author Topic:   Double hump question
ryan
Dirt Freak

Total posts: 430
posted April 22, 2002 01:48 PM
I was wondering how much of a difference there is between a 462 double hump head vs. a 291 or 461
the one good head I have now is pretty close to the description of the 291 how much of a difference are there in these heads are the flow numbers drastically different or would it be o.k. to use different castings. The heads I have now are small valved 305 heads until I can find a partner for my single.
CAMEL HEAD #291, 2.02-1.6 VALVES, FULLY PORTED & POLISHED, PINNED SUDS, PRESSURE CHECKED, BARE CASTING - $95
CAMEL HEAD #461, CUT FOR 2.02-1.60, PORT MATCHED, PINNED STUDS, PRESSURE CHECKED, BARE CASTING - $95

ryan
Dirt Freak

Total posts: 430
posted April 24, 2002 12:25 AM
At least a guess perhaps?

Flatlander
Dirt Freak

Total posts: 310
posted April 24, 2002 09:57 AM
Ryan I've run 461s and 462s on the same motor take them to someone and find out the cc on the chamber and if it's very close I'd try it watch your plugs it may make a diff on your jetting but if the plugs are comparable run it forgot to add if you can't find someone to cc it make a clay mold and compare it

[This message has been edited by Flatlander (edited April 24, 2002).]

LUBEGUY07
Dirt Maniac

Total posts: 156
posted April 24, 2002 11:48 AM
ryan go to motor tech. com they got a list of heads and it tells the cc's and all that other info on them.


ryan
Dirt Freak

Total posts: 430
posted April 24, 2002 12:39 PM
Do you mean www.mortec.com motortech.com is all electrical

LUBEGUY07
Dirt Maniac

Total posts: 156
posted April 24, 2002 03:15 PM
yes it is mortec.com sorry


Flatlander
Dirt Freak

Total posts: 310
posted April 24, 2002 05:15 PM
these are stock ccs make sure they haven't been milled

ryan
Dirt Freak

Total posts: 430
posted April 25, 2002 12:24 AM
Mine haven't been I don't know about the others

holeshot
Dirt Full Roller

Total posts: 53
posted April 26, 2002 10:49 AM UIN: 3728
the 462's intake runners are 170 stock.The 461's are 160.the 461x are 180 or so and the camber's can be 62 to 64 cc's

ryan
Dirt Freak

Total posts: 430
posted April 26, 2002 07:37 PM
Do you know the flow numbers for the 291? Thanks guys

ryan
Dirt Freak

Total posts: 430
posted April 30, 2002 12:59 AM
Whats the most you can mill double humps without making to many other changes. Steve? Anybody?

sdhnc29
Dirt Freak

Total posts: 467
posted April 30, 2002 11:09 PM
About a .040"-.050" flat mill is as far as you can go without running into a situation where extra machine work is needed .

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Rutherfordton , NC
(828)286-0780

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