CB performance: Competition Elimitators, or Wedge Ports.

[Bugzlife]

My question is will the Competition Elinimators, with there Crosworth style intake ports, with proper porting, out flow the, Wedge ports?

My second question, is for Strickly drag racing, would the Comp Eliminators, last longer? as far as more material surrounding the combustion chambers and valve guides?

Thanks, I think this year I will be able to "step up to the Mic", and lay down the cash, as the too are simular priced. its Going on the 2045cc duel 44IDF motor, 11-to-1, I may split case and FK-89 too.
I was thinking 46mm intake valves, or would 44 be better, I may step up to 48 IDA enentually.

[DRD]

My question is will the Competition Elinimators, with there Crosworth style intake ports, with proper porting, out flow the, Wedge ports?

My second question, is for Strickly drag racing, would the Comp Eliminators, last longer? as far as more material surrounding the combustion chambers and valve guides?

Thanks, I think this year I will be able to "step up to the Mic", and lay down the cash, as the too are simular priced. its Going on the 2045cc duel 44IDF motor, 11-to-1, I may split case and FK-89 too.
I was thinking 46mm intake valves, or would 44 be better, I may step up to 48 IDA enentually.

The CE head is the ski is limit, besides a Auto Craft.

[DRD]

My question is will the Competition Elinimators, with there Crosworth style intake ports, with proper porting, out flow the, Wedge ports?

My second question, is for Strickly drag racing, would the Comp Eliminators, last longer? as far as more material surrounding the combustion chambers and valve guides?

Thanks, I think this year I will be able to "step up to the Mic", and lay down the cash, as the too are simular priced. its Going on the 2045cc duel 44IDF motor, 11-to-1, I may split case and FK-89 too.
I was thinking 46mm intake valves, or would 44 be better, I may step up to 48 IDA enentually.

The CE head is the ski is the limit, besides a Auto Craft.

[Lo cash lester]

Drag only I would go with the Comp's. That's what I run and have been very happy. I've never raced the wedge ports but if you look at what you can do with a set of comps you'll be impressed. Take a look at mine that were just ported by AJ Sims. You can see them on the site. There is a straight shot to the valve, you'll never get that with a stock casting.

[MNotary]

The CE head is the ski is limit, besides a Auto Craft.[/quote]

But if you don't make the big jump to going bigger than 44 intake then it won't matter....???? And how many RPM's is THAT going to turn.

Justin...save it for track time....

[Marcus]

[Bugzlife]

Ok, thank you, for spec, the choice is obvious.

[Marcus]

All heads shown on the chart above are CNC Ported. Please note that CB Performance also sells Competition Eliminator heads that are not CNC Ported...

Cylinder Heads - Competition Eliminator (non-CNC Ported):
http://www.cbperformance.com/catalog.asp?ProductID=80

Cylinder Heads - Comp Eliminator CNC Ported - Complete:
http://www.cbperformance.com/catalog.asp?ProductID=1319

[Bugzlife]

Marc, I know its a dumb question, but what are the figures for the Comptition Eliminators 46mm x 40mm full CNC, running 44idfs,
with estimated 5.60 lift at valve.
will be upgrading to 48IDAs in future.
this is the one I am considering on my 2054cc, thanks, if you don't have the number I'll understand, thank you for all the input.

[mightymanx]

I run a 2276 w/ a turbo and switched from Auto Craft to CE for longevity and you can port the bejesus out of them.

[bkkbuff]

Marcus, If CNC Competition Eliminator w/48x40 valve is used with CB 48mm FI TBs say on a 2332cc engine, is that enough or a bigger size TBs are needed? How well will the head hold in auto-x type of driving and weekend long drive?

[Mike Lawless]

[quote=]Marcus, If CNC Competition Eliminator w/48x40 valve is used with CB 48mm FI TBs say on a 2332cc engine, is that enough or a bigger size TBs are needed? How well will the head hold in auto-x type of driving and weekend long drive?[/quote]

The 48 CB throttle body works great with the 48X40 CB CNC CE head.
Here's some numbers for you, 11.47 @117 in a 1900 street legal ghia...on slicks of course. Your results may vary.

[AlanU]

Marcus, If CNC Competition Eliminator w/48x40 valve is used with CB 48mm FI TBs say on a 2332cc engine, is that enough or a bigger size TBs are needed? How well will the head hold in auto-x type of driving and weekend long drive?

I would use an 044 casting for an auto-x application. You'll have more port velocity for the lower rpm ranges. The CE's you may find you'll have a lag and you'll have to wait for the airspeed to catch up but in that time you'll be more than likely braking hard before a corner. I'd imagine a smaller intake port will give you more torque in stop/go auto-x application.

[AlanU]

bugzlife,

Your engine displacement has less volume than a larger stroker (ie 2276, 2332 etc). The volume of the CE's intake port is very large, especially in the CNC version. The volume movement from BDC to TDC is less in your 2054 compared to a 2332. The engine is a glorified air pump and all the components in your "pump" will determine if it will be a HP maker or a NOT. I would think you would have better results with an 044 than a CNC CE. To big a head in my opinion for your displacement.

CFM numbers isn't a determining factor since your engine doens't mimic the constant vacuum of a flow bench. Less volume of your engine probably would make more power with a smaller head with more port velocity than a head with massive ports, slower port velocity from the volume you can push with your engine.

[MASSIVE TYPE IV]

I do alot of Auto X engines (mostly TIV for 914s)

You need instantaneous torque! Don't be worried about big flow, you need velocity and a cam that will keep you on edge.
I have used a Web 122/125 as a base and added some duration and a tad of a centerline change for great results in a TI auto X engine.. Heads were 42x37 and she was all done by 6K on the dyno, but the midrange was insane. It turned on a 2700 RPM and held its torque perfectly flat..