Na-Spirit

I got these cams for a good deal..is it possible to use them on this piston? If not..I think ill sell them and get blox c's instead, or b's. Would like to make over 200whp.

Setup:
B16a head
Ported/3 angle valve job/ supertech h1002d springs/Titanium retainers by cccylinderheads.com.
Skunk2 pro-3 cams
precision 440cc injectors
skunk2 pro series cam gears
skunk2 intake manifold port matched to a professional 68mm throttle body
3inch intake with blox velocity stack
arp head studs

ls head gasket

Rs machine 81.5mm pistons
stock ls rods
ls crank
Arp rod bolts
itr oil pump/water pump.

B20vEf9

Would they be ok to use on that motor..? Possibly, but would they be beneficial for you..? Probably not. I wouldn't run Pro 3's on a 1.8L, but that's just me. Look into pro 2's.

Na-Spirit

Im mostly worried about the valve reliefs being to shallow. Along with my valvesprings handling them. Probably should just sell them and get rid of all my worries.

B20vEf9

What I'm telling you though is even if they will work with no issues in my opinion you don't have the motor for pro 3's.

Na-Spirit

I hear you man.. My builder said even with the pro 2 cams I would have clearance issues. I have to look into how you actually check that. For now im just using some gsr cams until I get my injectors and cam gears.. My friend just made 205whp with his blox b cams/82mm ls vtec, may switch to those.

slick1851

Seems like you have a great topend, but your not matching it with the right bottom end. I would just pick up a B20 block and do a 2.0.

B20vEf9

Ehh I have a similar setup to yours except I have the Rs Machines Pr3 pistons, and I plan on running pro 2's.

The Rs machines pistons have pretty deep valve reliefs, so I'm hoping for no issues. lol

I guess I'll find out like next week.

Na-Spirit

I used to have a 85mm rs machine bottomend, but its trash now..needs to be resleeved. Had a complete ls block here so what the hell...ya ill be slower, but i see no reason why I couldnt get into the 13's with this setup.

Ill stayed tuned to your build man.. if you have no clearance issues I'll toss in some pro 2 cams myself. Maybe if i get this car light enough, i could hit a 12.9 on slicks ha.

092eg6

that motor i'll use pro1 cams.

DDTECH

too much cam, entirely, pro1's will provide better all around power.

B20vEf9

I disagree.

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/precisionautocanada-com-pro1-vs-pro2-dynotest-2684800/

Chris Tune

i've used pro3 on 1.8... they work FOR THEYRE INTENDED RPM RANGE.....

B20vEf9

So, are you trying to say they would be beneficial for his build..? Because I'd have to disagree.

They may work on a 1.8L with more compression on a motor that's not running stock rods.

Na-Spirit

thanks for sharing that dyno b20vef9.. Atleast I know my valve reliefs can support the pro 2 cams. And Chris, what pistons did you use with your pro-3's? Do you have a dyno graph? Appreciate the help guys!

092eg6

do u have to degree Pro2 in to make power?
I did a test on 1.8 ctr piston w/ pro2 vs Sk2 stage2 tuner series and pro2 lost 6hp at peak, both cams were not degree in, and I dont remember about the midrange numbers.

sk2 st2 make 211whp and Pro2 made 205whp.

MR_EJ8

Im about 99% sure that pro2's need to be degreed... not only to make max power but to ensure no valve contact.

93egSLEEPER

The pro 3's will be too aggressive for the compression your running. If you were in the 11.5:1 and up i would see it being beneficial, but with just 11:1 you will probably be tuning out power.

slick1851

Why dont you trade off the pro3s for s smaller set of cams? It only makes sense and your NA! Everything has to work together, its kinda sad to own Pro3s and be in the 13s dont you think?

Na-Spirit

I've never had a 13 sec allmotor car ha.. I'll feel pleased actually.

I do plan on selling them in the future tho, and buying some new cams..not sure which ones yet. Thinking skunk2 stage 2.

C_Rock77

You'll be better off with a smaller cam (M24, Pro2, etc). Also, I'm not sure how well those springs will stand up to the Pro3s.

That's one HELL of a cam!

Na-Spirit

I just want a cam where i know i wont have to worry about the valves nailing my piston.. just degree them in to whatever the specs say and tune it...Not sure if that's possible with the pro2..although that dyno b20 posted proved maybe I could.

cams are for sale btw.. 425 shipped.

slick1851

Im sure you can trade off those Pro3s to another all motor go looking for bigger and more power.

Trade him your big cams for there smaller cams, it would only make sense if money was a issue.

ilikehonda

then clay the motor. if you worried about p2v then clay it. with 11.1 compression you are meeting the min recommended compression of pro1's.

slick1851

You also need a hell of a nice header for those big cams, shitty DC headers= bottle neck.

Na-Spirit

The cams are sold... I always thaught the rs machine pistons in a lsvtec would get me around 11.7-12.0 compression? The cams are sold btw, not sure what im going to pick up next...just running on my gsr cams till later this summer