Im gona be getting my head work done this week or next but before i get it done I want to know how well would type-s cams do with spray? If they are not gona do any good im gona look into nitrous cams. let me know cause i wana get this done this week if possible, thanks

 

type S cams are pretty weak, barely bigger than a stock cam, so no it wont hurt them. I spray with crower stage2s which are far bigger than those and no problems. Ive seen many guys spray on bigger cams. I woouldnt do it on a stage3, but 2s are fine.

 

are your crower stage 2 nitrous cams? How do they perform when your not spraying?

 

Actually, just by lift numbers, the Type S cams are very comparable to a set of Crower Stage II's......I just can't find any duration #'s for the Type S cam.

Nitrous can go on any motor; don't think of building a "nitrous motor"; think more along the lines of using nitrous as a supplement. Nitrous will work great on any set of cams.

 

They will work on an all motor cam to a certain extent. I would not use nitrous on a st3 cam due to the overlap. It will blow most of the nitrous right threough the motor. As for the type s cams, yes they have good lift, but their duration is the limiting factor. Opening wide does no good when its just for a short time

 

ok thanks alot for the info

 

Dude, St.III cams w/ BOOST may blow air through, but it won't be a problem with nitrous. Think about it.

The air isn't compressed, so it's gonna flow through just like non-nitrous saturated air. Even though SOME pressure is being lost to duration, you're still making more power.

Plus, you're only gonna be spraying when getting on it.....getting on it = WOT at high RPM's.....when the high duration is not a problem.

Spray on anything you want.

 

This is just some info to debunk info that Type-S are not any better than stock
cams. I got this info from my own measurements and Automotive Engineering,
March 1997:

Valve timing at 1mm lift. (different than SAE which is measured at .050" lift)

Normal H22A vs. "S" H22A
Intake opening (BTDC)
15° 15°
Intake closing (ABDC)
40° 45°
Duration: 235° 240°

Exhaust opening (BBDC)
40° 45°
Exhaust closing (ATDC)
15° 15°
Duration: 235° 240°

Gross Valve lift measured at 1-mm lift w/1.55 rocker ratio
Normal H22A vs. "S" H22A
Intake:
(mm) SAE (mm) SAE
(11.5) 0.453 (12.2) 0.480

Exhaust:
(mm) SAE (mm) SAE
(10.5) 0.413 (11.2) 0.441


This is what I have found, though I have compared those lift numbers with the
USDM stock cam that came out of my lude. What I think is that this is published
info about the JDM stock cam not USDM since the lift numbers don't add up:

My USDM Vs. the stock cam posted above:
Intake:
(mm) SAE (mm) SAE
(11.42) .450 (11.5) 0.453

Exhaust:
(mm) SAE (mm) SAE
(10.59) 0.417 (10.5) 0.413

According to the helms manual for a USDM 93 VTEC
the duration and timing is the same as the above
"stock" listing. The only difference is the small variarions
in lift but think that they are different enough to make
me think that they are not from the same market.

JDogg made: 198hp and 148 tq with these cams with non-adjustable cam gears
and 10.5:1 CR. and the usual h/i/ex. I have seen a lot of people not getting as
much or much more than this with Crower st. 2's.

SO to answer some questions the Type-S cams have 10° more overlap/duration
hope it helps and I also think that spraying would yield more power since it does
not "blow by" as it would in a FI application.

the Pirate