TheSamba.com :: View topic

Mon Oct 13, 2008 4:17 pm

HI GUYS,
im gathering together all parts for my 2332 engine build and the only thing im having trouble with is the cam, all guys in uk say they cant get hold of an engle fk8 pre clearanced cam, are they available in the usa? if so where can i get one??
ive been offered a scat c45 clearanced cam which is similar but still would prefer fk8, what do you think??
regards steven

Mon Oct 13, 2008 4:22 pm

I've never seen pre-clearanced cams sold, but why not get the machine shop that's doing your case do the cam?

Mon Oct 13, 2008 4:49 pm

SLR sells SC1 preclearanced cams, I believe the SC1 is a Scat manufactured blank. They DO exist...

XV280 on 106 l/c, note flats in between lobes...

XR324, again note flats, this is an older blank which seems to have a smoother finish...

Mon Oct 13, 2008 4:55 pm

speedy s wrote: HI GUYS,
im gathering together all parts for my 2332 engine build and the only thing im having trouble with is the cam, all guys in uk say they cant get hold of an engle fk8 pre clearanced cam, are they available in the usa? if so where can i get one??
ive been offered a scat c45 clearanced cam which is similar but still would prefer fk8, what do you think??
regards steven

Engle themselves will clearance the cam for a price, contact them directly and see what they can/will do.

Short of that, have a reputable machine shop do it for you.

Mon Oct 13, 2008 5:15 pm

Here's another supplier:

http://www.thesamba.com/vw/classifieds/detail.php?id=417213

Mon Oct 13, 2008 5:16 pm

neil68 wrote: Here's another supplier:

http://www.thesamba.com/vw/classifieds/detail.php?id=417213
Darren know his "S"tuff.

Mon Oct 13, 2008 5:32 pm

order a cam directly from steve. he uses the scat billets (PRECLEARENCED) like RIS mentiond. and steve will get it done qwick usaly. and he is a great down to earth guy to deal with. you cant get better qauility. his #is
951-273-0816. JD.

Mon Oct 13, 2008 6:54 pm

We have a stroker clearanced fk8 on a sc1 billet in stock on the shelf, shoot us a email if you want it.

Mon Oct 13, 2008 7:25 pm

Or get out the die grinder and do it yourself..... I did with an FK-8 for my 2110. Just use alot of masking tape on the bearing surfaces. The center bearing is the trickey one. Make sure your tool rotation is opposite of the bearings surface so if it digs in it will not want to ride over on to that surface. I thought it was actually rather fun.

Tue Oct 14, 2008 4:42 pm

thanks for the help i have e-mailed darren!
whats the difference between engle cam and scat sc1 billet??

Wed Oct 15, 2008 12:30 am

My custom FK43 intake / FK7 exhaust cam was grinded on a Scat SC1 blank, with lube a lube SLR'd lifters, ordered from DRD, top service & prices 8) 8)

The engine should be running in 2 weeks

Wed Oct 15, 2008 8:53 am

Some clearance cams by turning them in a lathe.
OK for smaller strokes but bigger strokes take off too much material in my opinion.
Notching cams like some in the pictures shown is the preferred method.
Just take a little more time to get the notches indexed ccorrectly.
As mentioned, Engle and others vendors will notch camshafts.

Wed Oct 15, 2008 10:15 am

turboblue wrote: Some clearance cams by turning them in a lathe.
OK for smaller strokes but bigger strokes take off too much material in my opinion.
Notching cams like some in the pictures shown is the preferred method.
Just take a little more time to get the notches indexed ccorrectly.
As mentioned, Engle and others vendors will notch camshafts.

I use a Bridgeport and an old dead case-half that I modified so I can clamp the cam in without damaging anything. I clearance it using a 4 flute endmill, take about 30 min.

Wed Oct 15, 2008 1:31 pm

just recieved e-mail from darren at drd, he says if i go for scat sc1 cam i have to use scat lifters do go with it!! trouble is ive just bought 28mm cb lightweights!!!
so do i clearance engle cam and use my lifters or buy scat cam and lifters instead??
is the scat cam better i.e less likely to flat the lobes??
do you think i will have to crearance cam if im using scat forged 84mm chevy journal crank and rods???

Wed Oct 15, 2008 2:33 pm

what is the safe limit when clearancing the cam on a lathe? I need to clearance my FK8 to use with 82mm crank, VW journals. Clearancing on a lathe seems comfortable. Thanks.

Wed Oct 15, 2008 3:04 pm

1961bluebug wrote: what is the safe limit when clearancing the cam on a lathe? I need to clearance my FK8 to use with 82mm crank, VW journals. Clearancing on a lathe seems comfortable. Thanks.

What rod?
H-beams have a smaller cap than I-beams and need less of course.
Valve springs and over the nose pressures figure into that number too..........somehow........ :lol:

Wed Oct 15, 2008 6:07 pm

1961bluebug wrote: Clearancing on a lathe seems comfortable. Thanks.

Clearancing on the lathe takes off material all the way around the diameter,
which makes the cam weaker than if it were clearanced on a mill.

Wed Oct 15, 2008 7:01 pm

Unkl Ian wrote: 1961bluebug wrote: Clearancing on a lathe seems comfortable. Thanks.

Clearancing on the lathe takes off material all the way around the diameter,
which makes the cam weaker than if it were clearanced on a mill.

Or clearenced with a die grinder.... I will never use a scat lifter in my motor after comparing them to CB lifters under the microscope. Regardless of who is pushing them. All the big builders say that we the home builders are doing something wrong yet I never seen them spill their secrets as to what they do right..... Do a search on CB lightweights VS Scats and see what comes up... For a motor that is $ 3-7k why risk it.

Wed Oct 15, 2008 9:50 pm

I'm installed a Demello 82 mm crank and Rimco Super rods today the cam clearancing was minimal and took about 10 minutes with a grinder.

Wed Oct 15, 2008 10:00 pm

Here is my fk-8 clearenced by Competition Engineering