APE 410 CAMS QUESTION

are these just a drop in? from what i have read
i think there might be some minor material removal
in the head area...whats the scoop?....thanks in advance.......keith....

i believe top of lifter bores will need cleanup,inside valve cover also

Exactly.
On the inside of the valve-cover,remove the "crosses",and that should get you enough clearance,but check it to be sure.

APE says "performance valve springs required" and "will not work with stock pistons" Check out:
www.kzzone.com/cams.html
Not sure why the stock pistons are a problem?...maybe the valve relief is not deep enough to accomodate the lift.?... That would be a major problem.

Check out:
www.webcamshafts.com/pdf/2005-catalog.pdf
page number 48 grind number 118 for a true drop-in-cam with considerably better performance over stock. I ran this cam with stock pistons and springs for 1 season and was very happy with the performance over stock..then came the 1075 kit.

One note of caution: after 30 years, the stock valve springs and old cam chain guide components may or may not be up to the task. If you have the time and money, it would be worth pulling the head to freshen things up.

davel wrote:

APE says "performance valve springs required" and "will not work with stock pistons" Check out:
www.kzzone.com/cams.html
Not sure why the stock pistons are a problem?...maybe the valve relief is not deep enough to accomodate the lift.?... That would be a major problem.

Check out:
www.webcamshafts.com/pdf/2005-catalog.pdf
page number 48 grind number 118 for a true drop-in-cam with considerably better performance over stock. I ran this cam with stock pistons and springs for 1 season and was very happy with the performance over stock..then came the 1075 kit.

One note of caution: after 30 years, the stock valve springs and old cam chain guide components may or may not be up to the task. If you have the time and money, it would be worth pulling the head to freshen things up.

thanks for the links.....i have all new cam chain rollers and rubbers coming and i m putting a new chain in.....i have mtc 10.5 to 1 pistons and a redone set of jugs bored to 72 mm (1075)....the head is next in a month or two....just doing some homework and planning ahead...keith

The head needs cam clearance and Valve Springs are required. Your MTC pistons will have enough clearance.

If you have us do the head, we can cam clearance it for you at the same time.

Jay

APE Jay wrote:

The head needs cam clearance and Valve Springs are required. Your MTC pistons will have enough clearance.

If you have us do the head, we can cam clearance it for you at the same time.

Jay

thanks...i am looking at all options as far as cams
and having the head totally gone through.....

How stuck are you on the K410's?

If not using this particular bike in racing or drag strip where every ounce of power is required... Drop to a .365, .384 where you most probably will not have to do any cover modification. Not sure but possibly .395 CAM configuration!

The more experienced can chime in but I can't see where there's going to be that much of a significant difference in power between a .384/.395 and .410 setup...

Most probably I'm wrong...

OMR

i think the 384 is a little much for a streetable turbo motor,its being force fed so you dont need a lot of lift and a lot of duration just causes it to blow right back out the exhuast. i think it would be about right for a drivable low maintenance streetbike motor with a set of 29sB)

Old Man Rock wrote:

How stuck are you on the K410's?

If not using this particular bike in racing or drag strip where every ounce of power is required... Drop to a .365, .384 where you most probably will not have to do any cover modification. Not sure but possibly .395 CAM configuration!

The more experienced can chime in but I can't see where there's going to be that much of a significant difference in power between a .384/.395 and .410 setup...

Most probably I'm wrong...

OMR

hey OMR,
where is that chart from? it looks like the web cams chart but the prices are a LOT better....keith

you have to clearance the head and valve cover .395 cams also. i'm not sure about the lower lift cams .

i m starting to lean towards the .365.....i can get a new set of stock springs and have the head redone and be in business....between the 10.5 to 1 1075 kit,
a totally fresh head with new guides and seals and valves cleaned up, i should be where i want as far as dependability and a step up in performance..new chain, rollers and gears,and associated parts on the way, and i think i should be good...after all this i still have to do clutch and maybe rethink carb selection....thanks for everyones input and keep the ideas coming....i m still in the meaty part of the learning curve..........keith