CAM Spec help?
 

can anyone tell me what some of this ---- means all i under stand is the valve lash and lift.
http://img217.imageshack.us/img217/6...sbivhbdmm7.png

Re: CAM Spec help?
 

duration is how long the valve stays open. overlap is when the intake and exhaust valves are just barely open at the same time. doesnt happen on single cams but can be benificial on dohc's.

Re: CAM Spec help?
 

Ok then is 26.4 over lap good/

Iv been reading up and all i can find on honda cams is which ones to buy and not specs.
Im a noob at this kind of ----

ANYONE KNOW WHERE I CAN GET SOME A6 SPRINGS FOR CHEAP? ;D

Re: CAM Spec help?
 

I guess im not alone with this kind of ----. ???

Re: CAM Spec help?
 

Dunno if it is somehow different on Honda's, but I'm pretty sure overlap happens on all motors...
I assume it's a regrind since it is from Delta, but for a turbo camshaft, might want a bit more reverse split on the duration. Reverse split means more exhaust duration than intake duration. Haven't found anything concrete on what a good turbo camshaft is (tons of opinions from different manufacturers and engine builders), but that seems to be the general consensus. Hope that helps a bit. HMT could do with a good write up on valve events and camshaft specs.

Re: CAM Spec help?
 

Yea its a regrind from delta
i got my cam in the mail today and the duration and lift seemed a little low to me but im used to v8 cams.
Plus i wanted to know what all the other ---- meant.
OOO and its the 292 regrind which is there most rowdy cam for the a6
looking at the dam thing you can just tell the difference.

Re: CAM Spec help?
 

Haha yeah, big difference between the camshafts for performance V8s and I4s. Probably more used to seeing something along the lines of 232/238 .588/.611" on a V8. A lot of those extra numbers on the cam card are just valve event stuff, lots of detailed info about the cam.

Re: CAM Spec help?
 

i've been to delta and gotten their regrind. its a kick in the ass if you got the "best grind for a turbo" cam and have a turbo on your car.

Re: CAM Spec help?
 

A) Delta doesn't do Honda regrinds
B) that spec sheet is NOT for a SOHC motor.

The RAR numbers are a dead giveaway.

The column of numbers I fully understand........

Attachment 23822

Attachment 23823

Attachment 23824

Attachment 23825

Re: CAM Spec help?
 

uhhhh...sorry to burst your bubble, but yes they do.

i just got a quite on a y8 cam regrind last week. Why do you think that they dont do Honda regrinds??

Re: CAM Spec help?
 

They probably outsource to another company, as in you do business with Delta but they do business with someone else.

Personally I have no idea but Bone usually knows what he's talking about. Yea and dial indicator FTW.

Re: CAM Spec help?
 

I Doesn't look anything like when it left.
I try to find a stock a6 cam to compare.
But the lobes are not smooth like a stock cam they have high lift and a drop off.
Almost like a D shape

Re: CAM Spec help?
 

Delta has reground Honda cams for me before.

Re: CAM Spec help?
 

Delta has NEVER done a Honda Regrind, EVER!

They just send they somewhere else.

I believe chris has posted about this as well.

Re: CAM Spec help?
 

How do you know?

Re: CAM Spec help?
 

With less than a 48 hour turnaround time? That's how long it took for them to return his cams. He lives like an hour away from them.

Re: CAM Spec help?
 

they happily reground my a6 cam for me in Tacoma Wa.

was a 1 day turn around. got a free t-shirt too.

Re: CAM Spec help?
 

They sent me a shirt too

"Four Play, Four Cylinder Performance" 8)

Re: CAM Spec help?
 

Hooray inference! ;D O0

Re: CAM Spec help?
 

Are you saying SOHC engines have no overlap?

Re: CAM Spec help?
 

Possibly the cam spins so fast that by time the intake cam closes, the exhaust cam is already starting to open?

Re: CAM Spec help?
 

clueless noobs............

You dipshits need to learn basics on a small block chevy to ------- have ANY clue about valve event timing.

I'm sorry that I've enough knowledge to MEASURE specs to conclude an idea of the specs of something I'm working on.

This asspect is what ELEVATES people like JD, Blundar, me and others above the dipshits. Hell I don't know CRAP about tuning, thats JD's and Blundars area.........but I build their trannys or provide them built right.

Re: CAM Spec help?
 

I was trying to bait him into saying SOHC's don't have overlap. The truth is ALL 4-stroke/cycle engines (maybe minus the way old-school ones with poppet valves) have overlap.