Cam Recommendations?

[RockBit]

Originally Posted by Gaz64

I've searched Summit for "dumbbell" and I can't find that either.

Gary

Gary - Google AT2084

[Dominik]

Dumbbell.. :-)
They have a reduced diameter (neck) from halfway to a quarter up to save weight.
Actually look like a mini dumbbell.

[FatBoy]

Update...

I'm now talking to Brent about a custom ground cam rather than using Doug's old cam, so I think I'll be going down that route instead.

Anyone want a Holman + Moody cam and followers?

Paul

[FatBoy]

Originally Posted by Dominik

Dumbbell.. :-)
They have a reduced diameter (neck) from halfway to a quarter up to save weight.
Actually look like a mini dumbbell.

They appear to be the standard/original type for FE's although most of the suppliers now seem to sell the lighter hollow shell type and use longer pushrods.

If I were starting from scratch, I'd probably go down the shell route, but as my top-end has been setup for the dumb-bell type, I'll stick with those.

Paul

[Gaz64]

Yes Paul, I thought that's what we are talking about here, wasted at the middle.

Looks like a dumbbell, just never heard referenced in that manner.

Lightweight solid lifters makes more sense for me, .

Gary

[FatBoy]

Update:

I gave up on the original idea of using Doug's used H&M cam and followers and Brent spec'ed up a new cam for me specifically for my engine and intended use.

This is what he came up with:

...........................Intake................. ..........Exhaust
Total Lift:.............. 589" ............................ 600"
Duration @ .050":.. 242" .............................244"

Valve Timing @ .050": ........ Open ........................ Close
Inlet: .............................. 17 BTDC ................... 45 ABDC
Exhaust: ......................... 58 BBDC .................... 6 ATDC
Intake Centreline: .......... 104 degrees
LSA: ............................ 110 degrees

The engine is now all back together and back in the car and the dreaded cam break-in procedure has been done, so I'm now ready to hit the road, apart from one thing........me!

A couple of weeks ago I managed to totally detach my left bicep while at the gym. I needed surgery to reattach it, which involved drilling an 8mm hole into my Radius bone and fastening the loose end on my bicep into it with screws and a metal "button" on the back to prevent it pulling through.

I can lift nothing heavier than a cup of tea for 4 weeks and then I can very slowly start adding some weight.

I'm hoping to be able to start driving again in a couple of weeks.

Thank you everyone for your help, especially Brent, who was very helpful and patient with my endless questions.

Paul

[Gaz64]

Originally Posted by FatBoy

Update:

I gave up on the original idea of using Doug's used H&M cam and followers and Brent spec'ed up a new cam for me specifically for my engine and intended use.

This is what he came up with:

...........................Intake................. ..........Exhaust
Total Lift:.............. 589" ............................ 600"
Duration @ .050":.. 242" .............................244"

Valve Timing @ .050": ........ Open ........................ Close
Inlet: .............................. 17 BTDC ................... 45 ABDC
Exhaust: ......................... 58 BBDC .................... 6 ATDC
Intake Centreline: .......... 104 degrees
LSA: ............................ 110 degrees

The engine is now all back together and back in the car and the dreaded cam break-in procedure has been done, so I'm now ready to hit the road, apart from one thing........me!

A couple of weeks ago I managed to totally detach my left bicep while at the gym. I needed surgery to reattach it, which involved drilling an 8mm hole into my Radius bone and fastening the loose end on my bicep into it with screws and a metal "button" on the back to prevent it pulling through.

I can lift nothing heavier than a cup of tea for 4 weeks and then I can very slowly start adding some weight.

I'm hoping to be able to start driving again in a couple of weeks.

Thank you everyone for your help, especially Brent, who was very helpful and patient with my endless questions.

Paul

There's a lot of advance ground into that cam.

To give you an idea, it has 6 degrees of advance, take that out, we end up at 11/51 on the inlet, 52/12 on the exhaust.

So depends on what you want the engine to do.

I would like figures of 13/49, 54/10.

But your lift increase will certainly help.

Valve springs to match of course.

Gary

[blykins]

If compression allows, I always grind a lot of advance into my street cams. The throttle response and snap is very much noticeable.

Most of my 110 LSA cams end up on a 104 ICL. My 106 and 108 LSA cams will usually end up at either 102 or 100 ICL, if the piston/valve clearance and the compression ratio will play nice with each other.