Brian Crower Stage 1 Cams

[Mathewgzlz]

Damn it now I'm going to have to build the motor


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[DAMotorsports]

Originally Posted by arghx7

Also, please release

Intake Valve open event @ 1mm lift (or .05" if you want to do it that way)
Intake Valve Close event
Exhaust Valve Open event
Exhaust Valve Close event

Cam centerlines at AVCS most advanced and most retarded position

and if possible equivalent values for the stock cams.

What would really be nice is if you can give cam angle vs lift for each cam in a .csv file so we can actually see the ramp of the cam grind between stock and the aftermarket cams.

Also, please provide any durability information you have done on the high pressure fuel pump cam. Do you have a motoring test rig or a firing engine running durability schedules? I don't think anyone here wants premature failure of their high pressure fuel pump. Even copying the stock fuel pump cam love doesn't guarantee long term durability because the dynamics of the cam change when all the other lobes are different.

Originally Posted by arghx7

Just keep in mind guys that people measure their cam durations and lift like they measure their junk. The bigger number is always better, and nobody's sure exactly how the ruler was positioned.

If I open a service manual for the BMW N20 engine, their 2.0 DI turbo engine with continuously variable valve lift and dual cam phasers I get this diagram:



I can see the full grind of the cam there when the Valvetronic is in full lift mode. I can see the actual centerlines at the limits of the phasers rather than a calculated value. I can infer how the durations were calculated by looking at the listed duration and looking at the grind of the cam.

This is the information needrf from the vendors to make a fully informed decision about camshaft options. It's more than a silly listing of numbers and abbreviations that you would see plastered all over LS1Tech.

We have the cam profiles provided by BC. However, they have asked me not to release the information at this time. We are still working with them and hope to provide information, We are sorry if this is an inconvenience.

[Calum]

Originally Posted by DAMotorsports

We have the cam profiles provided by BC. However, they have asked me not to release the information at this time. We are still working with them and hope to provide information, We are sorry if this is an inconvenience.

Have you also been asked to not release the stock cam profile information?

[DAMotorsports]

Originally Posted by Calum

How long have you been running these cams? Any issues with the di pump?

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Originally Posted by mad_sb

So, these cams were designed with boost or NA in mind???

The cams use the cams same DI profile as stock, no change at this time. The cams we tested are the NA cams. BC wanted to see how they would respond with FI and give a starting point to work from.

[arghx7]

Originally Posted by DAMotorsports

We have the cam profiles provided by BC. However, they have asked me not to release the information at this time. We are still working with them and hope to provide information, We are sorry if this is an inconvenience.

Thank you for being understanding.

[AdrianG]

Originally Posted by lbroskee

for now not sure, but I'm just thinking ahead. would rather only open the block once. in the end of it all i think i want to sit around 700 (350 on my stock block with boost and then double it after i go built)

I agree, if your plan is to make 700bhp then replace everything you can the first time. If your factory crank does let go chances are those expensive rods and pistons will go with it and you'll be shopping for a whole new shortblock.

[fooddude]

So what are the expected/estimated hp/tq gains (and rev limit with springs) on NA?

[DAMotorsports]

Originally Posted by Calum

Have you also been asked to not release the stock cam profile information?

The info we have for the stock cams is only the lift and deration as tested by BC.

Deration@.05: Intake 206
Exhaust 200
Lift@.05: Intake 268
Exhaust 265

[mid_life_crisis]

Originally Posted by lbroskee

now the only thing still kissings is a stronger crankshaft

Wow. You really like built motors. No comment on bore and stroke...

Originally Posted by AdrianG

I agree, if your plan is to make 700bhp then replace everything you can the first time. If your factory crank does let go chances are those expensive rods and pistons will go with it and you'll be shopping for a whole new shortblock.

Agreed, it sucks big time when pieces that belong inside the block end up on the outside while you're driving down the road. BTDT

[lbroskee]

Originally Posted by mid_life_crisis

Wow. You really like built motors. No comment on bore and stroke...



Agreed, it sucks big time when pieces that belong inside the block end up on the outside while you're driving down the road. BTDT

hahaha. weirdest autocorrect EVER. but yes i do like built motors. i grew up around bikers with great built engines and love what they can do over factory

[lexusb3]

@LBroskee all i have been waiting for rods pistons cams a one time thing. I would hate to build and then open the car up again to add the cams!

[AdrianG]

Originally Posted by lexusb3

@LBroskee all i have been waiting for rods pistons cams a one time thing. I would hate to build and then open the car up again to add the cams!

At least you don't have to open the bottom end to do cams, you probably don't even need to take the heads off if you do it one at a time (or if you do it in space, gravity is a bitch).

[wparsons]

In for N/A numbers!

[lexusb3]

Originally Posted by AdrianG

I agree, if your plan is to make 700bhp then replace everything you can the first time. If your factory crank does let go chances are those expensive rods and pistons will go with it and you'll be shopping for a whole new shortblock.

Originally Posted by lbroskee

hahaha. weirdest autocorrect EVER. but yes i do like built motors. i grew up around bikers with great built engines and love what they can do over factory

Originally Posted by AdrianG

At least you don't have to open the bottom end to do cams, you probably don't even need to take the heads off if you do it one at a time (or if you do it in space, gravity is a bitch).

YA but just that fact of going in the motor lol!