Sr420Det

I figured I would have a better chance in the FI forum. Is there any way I can tell the differance between these two cams without measuring.


Modified by Sr420Det at 11:42 PM 6/24/2008

Sr420Det

bump

VTC_CiViC

I know you want to do it without measuring, but there are some really cheap digital micrometers out there at auto parts places that'll really help you be certain what cams you're looking at.

See Are X

how big are the gsr lobes supposed to be anyways?

rorik

The distributor side ends look different. Just google it.

Sr420Det

Mine looks just like the b17 on the bottem as in it has 3 protruding but on the top it has one ingraved ring (like the b16a2 or the jdm type r jdm 95-00), on the intake side and the exhaust it looks just like the b17. http://www.ff-squad.com/tech/temp/VtecCams.htm take a look and tell me what you think. Are the b17 gsr's any better than the b16a2?

Sr420Det

Ok I finally found something but I cant see the pics. If anybody can let me know and from what I read Im assuming the pic of the b18 gsr cam is wrong in the before mentioned website. Check this out and let me know what you think. Oh by the way I dont know how to quote people so Im just gonna copy and past. "I've got a set from a 98 GSR that look identical to that. Both intake and exhaust cams both look like that on the ends, just that the intake side has the groove for the distributor (obviously). So, the picture listed on the first page of this thread for the 94+ GSR cam is wrong. I've verified this with a 95 GSR as well. So, 94+ GSR cams have one Large groove on the end, and two smaller grooves on the fat ring on the end of the cam, like what is pictured right above." THIS is on page 2 of https://honda-tech.com/zero...age=2
Thanks alot for taking a look.

Sr420Det

Well there was a little more to that last thread I posted. Like I thought these are gsr cams check it out: https://honda-tech.com/zerothread?id=1220152 Somebody needs to stickie some of this ****. So after all this I wonder what kind of cam is in the picture of the 94+ gsr cause its definetly different then the rest of them.

HondaCivicSiR1

i will be using b17a cams in my stock sleeve lsvtec.if the cams you have aren't first gen b16a cams it will good power

RC000E

I can take pics of B16, B17, and B18c1 cams if it'll help anyone...let me know!

Sr420Det

I would like to see the pics especially the b18c1 cams but I think I pretty much got it figured out.

See Are X

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RC000E &raquo;</TD></TR><TR><TD CLASS="quote">I can take pics of B16, B17, and B18c1 cams if it'll help anyone...let me know!</TD></TR></TABLE>

please do

RC000E

As soon as I get to the shop today I'll post them up. I'm waiting on FedEx at my house cause there was shipping/billing mixups, so I can't get to work today!

That link posted above has a bunch of pictures of different cams, but some of the pics contradict themselves...lol. The B17's are pictured twice, and look different in each picture...haha.


Modified by RC000E at 10:22 AM 6/26/2008

RC000E

Well, here's what I've got. Just through my searching, it's apparent there are various GSR and B16 cams. I can fully confirm the identity of these cams here, so I have no question they are correct. All these came out of intact, stock motors that were taken apart.

I'd imagine it is possible the OBD1 and OBD2, maybe even the JDM GSRs all had slightly different cam ident markings. Possibly the XSi's versus the SiR B16's as well.

The b16's I have, have a very distinct ridge, that I've seen some other b16 cam pics not show.



The B17's seem consistent with other things I've seen and look VERY similar to the 96 GSR's I have, with only a SLIGHT difference.





The B18C1's here have only a ridge on the exh. that the B17's don't, and the intakes are all but identical. The only difference is the very end of the B17, where the dizzy engages is slightly taller....but no ridges or anything to show the difference. Weird.

philafelman

i wish they just stamped these things from the factory....make life a lil easier.

Sr420Det

So the intake cams look identical, got ya. Well at least nothing I could tell unless I had both sitting in front of me and could look at the height of the dizzy side. My exhaust does have the ridge so I assume they are b18 unless they sent me a b17 intake lol. So is there any difference in lift and duration. I also read somewhere where the guy was talking about stamped letters but I dont see any lettering unless its under the cam gear which I will find out shortly.


Modified by Sr420Det at 3:54 PM 6/26/2008

RC000E

Well, at quick glance, the GSR's have the letter A stamped between cyl 1 and cyl2 on the intake cam, and the letter B stamped in the same place on the exh cam, but they have no other identifying marks beyond that.

The pre obd b16's have the letter G in that location on both sides

Not a very consistent system....lol.

Sr420Det

b17 or b18

Sr420Det

what a minute mines got J and 4 stamped on the exhaust and D stamped on the intake. Damn I didnt even see that.

RC000E

I'll have to check the b17's and see if they have those markings. Guess we need to compile a master cam ident file...lol.

See Are X

does anyone know what size lobes each cam has?

Sr420Det

No but here is a big list I found on another site:

Following Cams Measured at 1mm of lift:
Integra Type-R(Through 1999 Spec)
Int-240 dur. / 11.5mm lift
Exh-235 dur. / 10.5mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms. Mugen Valve Springs can also be used.
Description: These are great, reliable cams for the money. You can pick up a set for as little as $500.00 new if you are lucky! They will give good gains from midrange all the way until 8400rpms. These cams have stock idle characteristics.

Civic Type-R And Integra Type-R(Integra Type R 2000/01 Spec)
Int-243 dur. / 11.5mm lift
Exh-235 dur. / 10.5mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms. Mugen Valve Springs can also be used.
Description: These are great, reliable cams for the money. You can pick up a set for as little as $550.00 new if you are lucky! They will give good gains from midrange all the way until 8400rpms. These cams have stock idle characteristics.

Skunk2 Stage 1
Int-252 dur. / 11.5mm lift
Exh-249 dur. / 10.8mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms. Skunk2 Valve Springs can also be used.
Description: These are very underrated cams. They do cost around $100-$200 more than the Type-R cams but they also offer much more duration and will give more power than the Type-R cams. Similar power range of Type-R cams but stronger throughout the power band. This is a great set of cams for a budget minded B16A owner. These cams have stock idle characteristics. I would recommend using Skunk2 cam gears with these cams.

JUN Type 1
Int-265 dur. / 10.9mm lift
Exh-268 dur. / 10.0mm lift
Valve Springs to be used: Tough to say. I have never seen anyone use this cam. The characteristics say that a stock B16A/GSR valve spring could handle these cams for use up to 8200rpms. Any operation above that and I would use ITR valve springs or even JUN valve springs.
Description: Again, I have never seen these used. I have no clue on the power these cams will deliver but it should be similar to that of a Skunk2 Stage 1 cam, although they are very different cams. These cams have stock idle characteristics. I would recommend using JUN cam gears with these cams.

Spoon Sports
Int-256 dur. / 11.5mm lift
Exh-245 dur. / 11.1mm lift
Valve Springs to be used: Integra Type-R. These cams are wild enough that you should not be using the low 8200rpms rev limit. If using these cams past 8800rpms(why would you) I would think that Port Flow or even Toda valve springs would work but I don’t think these cams will make much power after 8400rpm.
Description: Another somewhat rare cam. Will show definite gains over that a Type-R cam and very good gains on a stock B16A/GSR motor. Stock idle characteristics from the few users I have seen use them. I would recommend using Spoon cam gears with these cams.

JUN Type 2
Int-267 dur. / 12.0mm lift
Exh-265 dur. / 10.9mm lift
Valve Springs to be used: Integra Type-R up to 8800rpms or JUN valve springs for all operations. These cams are wild enough that you should not be using the low 8200rpms rev limit.
Description: Another rare cam but a few people have used it including JSIR. Cams will have just as much midrange gain as the big-brother JUN Type 3 but will start to slack off over 8400rpms when the Type 3’s are still making power. However, this cam will cause fewer headaches to get right and does not require the fancy valvetrain and tuning of the Type 3. This is by far the most underrated cam of this whole bunch. These cams have stock idle characteristics but still offer better midrange power than the JUN Type 3 (start making power at an earlier rpm) . I recommend using JUN cam gears with these cams.

Skunk2 Stage 2
Int-266 dur. / 12.3mm lift
Exh-262 dur. / 11.8mm lift
Valve Springs to be used: Skunk2 preferred but Port Flow will work as well. These cams are wild enough that you should not be using the low 8200rpms rev limit.
Description: The new top dog of the cam world. This will become the most common aftermarket (non OEM) cam in the US when they start getting distributed more. These have a very similar power band as the JUN Type 3, with less cost and better reliability (I said the “r” word). Not huge midrange but very good gains from 7000rpms all the way to 9000rpms(peak is usually around 8000-8200rpms). These cams have stock idle characteristics, thus making them the ultimate street/strip cam. I recommend using Skunk2 cam gears with these cams.

JUN Type 3
Int-265 dur. / 12.0mm lift
Exh-265 dur. / 11.5mm lift
Valve Springs to be used: JUN preferred but Port Flow works as well. These cams are wild enough that you should not be using the low 8200rpms rev limit.
Description: Until the Skunk2 Stage 3 this was the best high-end performing cam on the market. The JUN 3 and Toda B were the two fighting out for the top dog when it was just JUN and Toda (ahh the old days). Again, like the Skunk2 Stage 2, not huge midrange but very good gains from 7000rpms all the way to 9000rpms. These cams have stock idle characteristics, thus making them the ultimate street/strip cam. I recommend using JUN cam gears with these cams.

Skunk2 Stage 3
Int-270 dur. / 12.8mm lift
Exh-279 dur. / 11.8mm lift
Valve Springs to be used: Skunk2.
Description: A race only cam. Not to be used on the street, if they are you should pull the head every oil change to make sure everything is OK. This cam makes huge top-end power gains but still retains stock idle characteristics (weird). This cam is or has been used by Skunk2’s drag racing team and Speed World Challenge team as well. I recommend using Skunk2 cam gears with these cams.
__________________________________________________ ______________________
Following cam measured with 0mm of lift:
Civic Si(1999 Spec)
Int-265 dur. / 10.5mm lift
Exh-267 dur. / 9.6mm lift

Integra GS-R
Int-274 dur. / 10.7mm lift
Exh-276 dur. / 9.6mm lift

Crower 400
Int-279 dur. / 10.7mm lift
Exh-280 dur. / 9.6mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms.
Description: This is a weird cam. I would call it an OEM replacement cam. It fits in between stock B16A/GSR cams and Type-R cams. There are not huge power gains to be had with these cams but you may notice a small difference. These cams have stock idle characteristics. I recommend using Crower cam gears with these cams.

Civic Type-R And Integra Type-R(Integra Type R 2000/01 Spec)
Int-278 dur. / 11.5mm lift
Exh-280 dur. / 10.5mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms. Mugen Valve Springs can also be used.
Description: These are great, reliable cams for the money. You can pick up a set for as little as $550.00 new if you are lucky! They will give good gains from midrange all the way until 8400rpms. These cams have stock idle characteristics.

Crower 401(NA Version)
Int- 282 dur. / 11.3mm lift
Exh-277 dur. / 10.5mm lift
Valve Springs to be used: Stock B16A/GSR if using stock 8200 re-limit. Integra Type-R if using rev limit over 8200rpms. Crower Valve Springs can also be used.
Description: This cam is almost identical to the Type-R cams. A little more duration overall but that is traded off with a little less lift on the intake cam. They will have similar gains and powerband as the Type-R cams. If it were up to me I would just choose the Type-R cam based on reliability alone (there is that “r” word again). These cams will have stock idle characteristics. I would recommend using Crower cam gears with these cams.

Crower 401-T(Forced Induction Version)
Int-280 dur. / 11.8mm lift
Exh-276 dur. / 11.3mm lift
Valve Springs to be used: Crower.
Description: One of the only true boost cams for B-Series Hondas on the market. This cam is designed for low overall to prevent blow-by and to save boost. This is typically associated with lower duration and high lift but cam lobe separation is also a factor with these cams (thanks Clayton). These can be used in a NA car but they will see better gains from a cam set with more duration. Stock idle characteristics are attained from my sources. I would recommend using Crower cam gears with these cams.