cam specs

[Christ]

I really don't wanna do this, posting about this... I know the info is out there, but i really can't seem to find it. I need the specs for the B2 cam vs. the A6 cam.. I keep getting rederick from Honda about it... one person telling me they're the same but 6* off... and another telling me they don't give out the specs over the phone, etc.. SOS from them.. so I just need both sets of specs, or preferably which cam will make more torque at the bottom end in my B2 w/ slight port and polish, and CAI... also, would the B18 (LS) Throttle body do anything for me? I mean if I ported the manifold to use it. I wanna make more low end power, for driving in the city... don't really care about racing the car at this point, it's not even close to fast enough right now.

But yeah, if someone could get me those B2 and A6 cam specs, or a link to such, or just post which one would be better for the low end, that would be FREAKIN GREAT!... thx guys

[EF_LSVtec]

I don't think you'll get the answer you want without trying one and getting your car on a dyno machine...especially with your added mods, ie. porting. Hard to say how you're car will perform because the cams you want were made for a certain "set up". As for using a B18 (LS) TB and mani-porting, in theory, if you're adding more air, without bumping compression or displacement, then it's useless.. What you want is a free flowing motor...smooth air/fuel, timing, free flowing exhaust too.

[kris]

Back when I built my high compression D16, the guys ad Gude Performance were very helpful. I eventually went with one of their head packages, and cam.

If you are serious about finding your answers, and stop relying on others to do your legwork, you could try talking to them.

Cam Specs

[Christ]

na, the reason I was asking about the B2 cam is b/c I have 3 of them laying around, and I wanted to know if it would bring my powerband back down to a manageable level... right now, I don't start making any real power until I get to 4200 RPM... and it drops out @ 6000... I can't rev past 6400 in second gear, before I lose everything. basically, w/ the HF gears, this is completely worthless even for street driving, but the car will still do 120.

So I think this christmas, when I get back to my shop, I'm going to swap them out and "butt-dyno" it... that way if it's no good for me, I"ll still be there, so I can swap them back out again.

So when I build the other engine w/ High Comp, it would be better to use the LS TB? I plan on going around 10.5-11.5:1 w/ the other engine, DOHC...

Also, this is just a stupid question i was thinking about last night... would it do any good to actually polish the runners and plenum inside the manifold? and radius the TB side of all the runners at their mate w/ the plenum, to aid more direct airflow into the runner from the TB.

[EF_LSVtec]

Originally Posted by Dr0pZ0n3

Also, this is just a stupid question i was thinking about last night... would it do any good to actually polish the runners and plenum inside the manifold? and radius the TB side of all the runners at their mate w/ the plenum, to aid more direct airflow into the runner from the TB.

Been done before...it's called extrude hone..

[CivicSpoon]

Originally Posted by EF_LSVtec

Been done before...it's called extrude hone..

No, Extrude Hone is just 1 way of porting & polishing. You can also use a rotary ("dremel") tool with a flexable attachment. Or cut the manifold, P&P it out, and then reweld it. Extrude Hone is the most effective way, but it's also far more expensive.

As for cam specs, this is all I've found so far:
http://www.d-series.org/forums//showthread.php?t=22640

Not sure I would really trust any of this info though. There's a lot of back and forth about inaccurate measurements, way off measurements, and at one point stating that the D15B2 cam was the same as the '92-'95 D15B7 cam.

[Christ]

yeah, saw that.. that's why I posted here.. everything I found was either completely ghey-like false, or unreliable.. Someone actually said at one point that the B2 cam is hotter than the A6 cam.. I've also heard tell of them being the same, just 6* diff or so. (1/2 tooth).

See, that's why I posted here, I've been searching like crazy, but I was hoping a few more ppl might have some sites that I'm not aware of or whatever.

I still think I'm going to "butt-dyno" it, just install the B2 cam, see what it feels like, then if it's not diff enough, or I don't like it, I'll just throw the other cam back in.

I do know that the A6 and B2 head castings are the same, the valves are the same (pretty sure) and everything else is identical.. so I guess it would make sense that they're the same cam, but on the same note, would adding .1 liter and a lil compression really make that much diff? or was it the MPFI addition?

My personal guess is that everything is pretty close to being the same engine, except 1.6 liter and MPFI instead of 1.5 liter and DPFI... and the stroke is diff.. 84mm vs 90mm, which I think makes about .2:1 more compression than the B2..

[Christ]

and I'm aware that its' been done before, but "it's been done" doesn't tell me if it will DO anything... the question was "would it do any good.." not "is it able to be done" I know I could do it.. I could sit there w/ a rag and polishing compound on a paint stick if I wanted to... not that I'd do it that slowly.

DREMEL!!!