Help me pick my roller cam specs please..

[Slo86GN]

I just ordered the 206/210 from Mike, so will see how well it works with the GT6152S and FMIC. I wasn't thinking about a split pattern initially, but started thinking about how much more exhaust flow I need with the 61 to get the spoolup I want. I think it should work out pretty well, especially with the 3200 stall I have.

That reminds me.......do I need a multi-index timing chain with the roller cam, or can I use the standard double roller I have now? Forgot to ask that when I ordered the cam......

 

[VadersV6]

Example a cam with 240* @ .050 ground on a 114 may have more overlap than a cam that is 200* @.050 that is ground on a 108. You have to look at the whole picture and what the event timing is, when the opening and closing points occur.
Mike

Dont you mean that the other way around, Mike? Your point may have been that the 240 cam may have less overlap than the 200 cam, because the 200 cam is ground on a closer separation, giving it more overlap?

 

[Mike Licht]

I guess I need to slow down a bit, that should read:
Example a cam with 240* @ .050 ground on a 114 may have LESS overlap than a cam that is 200* @.050 that is ground on a 108.

Good catch, thanks.
The point is you cannot look at only the seperation number and say that a cam has more or less overlap unless they are the same duration and lobe
Mike

 

[Ed Valvo]

Great info. Any advantage to going to a 112-113 vs 109-110?

 

[WSLN 6]

I just ordered a 210/215 from Mike, but it will be a while before I have any results. (Unless it goes in my snowmobile.........)

 

[at7we2]

I've got a Comp 210/215 roller sitting in a box (still) and I've been wondering if it's going to be too much for my combo. Actually, I think it would be perfect for my *current* combo although I need more stall. Current combo:

- TE45a
- PTE front mount
- restalled D5 (definately need more stall for the 45)
- 50 lb. inj. (probably need more inj. too)

I'm thinking the 210/215 would work great with the TE45, but I'm seriously considering downsizing my combo to:

- TA49 (or something in that range)
- PTE stock location
- keep the restalled D5
- keep the 50 lb. inj.

I think the 206/210 might work better for the smaller combo. Anyone have some feeback?

BTW, the cam is still in the box because I sold the car I originally bought it for before I had a chance to install it and now I've been working out some other issues with my "new" GN. cam replacement hasn't been the priority.

 

[Mike Licht]

With the 49/D5 combo the smaller one would be better for drivability. We can work out a trade if need be
Mike

 

[Ormand]

That's old school turbo thinking

Really? The latest cams from the big cam vendors for turbo engines have more intake duration. The science behind that is sound, and hasn't changed, so not sure why anyone would think something "new" is better. Weber has lots of experience with the turbo cams (not the Weber cam people, but the vendor with ads on this site) and they have demonstrated the benefits of longer intake duration.

 

[Mike Licht]

Actually not only their latest cams but their cams from the last 20 years too. We like these long exhaust cams better. We have lots of units out there now with nothing but good reports. Many Turbo race teams are also using the long exhaust cams. Dan at DLS has a few so does Duttweiler. We can provide whatever you prefer however.
Mike

 

[49-blues]

What are some of the advantages of longer intake durations?

 

[Adrian87]

Argh I need to order my cam but I still don't know what to get. If no one tells me what to get and why I am going to order the 212/212 comp roller.

 

[WIKEDV6]

210/215 would be my choice
Mike

We have few cars with 210/215 cams from Full Throttle running, these cams are awesome.

To give an example, the combo on this particular car is as follows: Ported heads and intake, 210/215 Ductile roller cam from Full Throttle Speed, 63-1 turbo w/ .63 precision exhaust housing, Precision FM, 3" ATR down pipe, ATR headers, Translator Plus and a custom chip from Full Throttle as well , 65lbs injectors, Alcohol inj. full race tranny and Art Carr 9" 16930 N/L converter.

We were only able to make one pass at the track, it was so crowded. We couldn’t even tune the car. Drove to the track on pump gas, Alcohol wasn't really set up. The max boost was 19 psi, nothing was in kill mode. Took the street tires off and put some 28" tall slicks. That was the only change. Didn’t touch the boost or the timing, no race gas either. Full street trim with 93 octane, alky and low boost setting of 19 psi.

The car went 11.20 @ 119mph with tranny shifting at 5000 rpm. If we had shifted the car AT 5700-5800, we may have seen an 11.000 or 10.99999 on all street trim

If we had turned up the boost with race gas and more timing who knows what the car would have run.
The cam works great, we have other cars with the same combo but different cams. Those cars pulls no where near hard as the car with the 210-215 cam from Full Throttle.

Thanks Mike for putting together such a good package with the beehive springs, roller lifters, locks, push rods and all the goodies, it makes my job a lot easier.

Just my $.02

Prasad

 

[Adrian87]

Can anyone post specs of this cam?

 

[NCTURBOS]

We have few cars with 210/215 cams from Full Throttle running, these cams are awesome.

To give an example, the combo on this particular car is as follows: Ported heads and intake, 210/215 Ductile roller cam from Full Throttle Speed, 63-1 turbo w/ .63 precision exhaust housing, Precision FM, 3" ATR down pipe, ATR headers, Translator Plus and a custom chip from Full Throttle as well , 65lbs injectors, Alcohol inj. full race tranny and Art Carr 9" 16930 N/L converter.

We were only able to make one pass at the track, it was so crowded. We couldn’t even tune the car. Drove to the track on pump gas, Alcohol wasn't really set up. The max boost was 19 psi, nothing was in kill mode. Took the street tires off and put some 28" tall slicks. That was the only change. Didn’t touch the boost or the timing, no race gas either. Full street trim with 93 octane, alky and low boost setting of 19 psi.

The car went 11.20 @ 119mph with tranny shifting at 5000 rpm. If we had shifted the car AT 5700-5800, we may have seen an 11.000 or 10.99999 on all street trim

Prasad

Last year with my gray car I went the time in my sig. on the cars very first pass. Running one of Weber's 206/206 HL rollers and a fairly similar combo. to the rest of yours, including 93-octane, 18psi boost, very rich tune, etc.

I think (IMHO) that if you were to swap camshafts in/out of the car on an engine dyno you wouldn't see much of a HP/TQ change. The majority of the change would be @ what rpm range the motor likes.


K.

 

[Blown&Injected]

210/210 is great. Just about any of the ones mentioned would be very good.
BTW, to the guys running these cams ( the 21x/21x variety roller ), how is you idle vacuum warm and in park and warm and in drive?

Will it is hard to get the car over 150* these days but with a 218/212 roller I am at 13 to 14 in Hg in park and 12 to 13 in gear.