Hello,

it's very difficult to find info on those cams.

what are the BTDC, ABDC, BBDC, ATDC?
and if possible the difference of lobe in X and standard cams?

or just a pic with cam profile like this for example: the endyn cam


thanx,
I have only found that:
INTAKE lift - 12.1 mm, duration 270 @ 1mm
EXHAUST lift - 12.1 mm, duration 270 @ 1mm

I don't want the specs of the M25E cams. lift too agressive for my set-up: valves too small.

if you know a set-up with those cams or a dynosheet, I will be happy too!

 

I had them, I loved them. Way bigger than the Pro3s. Made 40hp more in the midrande and 16hp more on top in my big 2l. I suggest to use it only in very serious setup over 2l.

edit: degree them to 100, 109 lobe center.

 

I had a hard time getting the info from Rocket himself back when I had a pair of M24x's, makes it difficult to degree without those specs!

 

jesusssssss

 

Op, Do you have the rm m25's already? If so I can get you the specs.

 

THE GREAT ONE has emailed me the spec. Op, Pm me when you get a chance.

 

does rocket motorsports even have a website? i have tried looking them up before...

 

No rocket motorsports as a company Is closed. You can still get some of his products though select dealers on the web on this website.

 

How much lift did they have over the Pro3's?How much more duration @.050 and .100 than the Pro'S? Was the 40 more BHP on the primarys ore Vtec lobes?

 

I replaced tuner3s with m25 back then. 40hp was @6000, right before VTEC. Reason is the Tuner3s has basically stock primarys. Lift is not important over 12mm IMO, duration rules.

Own, not NASA accurate measurements:

Tuner3
12mm/11.5mm 256°/250°@1mm 88°/80°@10mm

Pro3
12.24mm/11.85mm 260°/268°@1mm 100°/94°@10mm

m25
12mm/12mm 275°/273°@1mm 100°/100°@10mm

 

night and day difference before vtec huh?

 

So, your BHP comparisons are to the 1996 tuner 3's/ Not Pro 3's plus your numbers are wrong. Thanks for the info. Pro 2's are larger than the 3 numbers you gave.

 

All Duration @ .050

M24xx Intake .472/262 Exhaust .472/262
M25xx Intake .472/270 Exhaust .472/270
S.Cam Intake .462/276 Exhaust .462/276

Pro2 Intake .493/258 Exhaust .458/265
Pro3 Intake .500/270 Exhaust .470/273

Lets all remember that cams are more than lift and duration.

 

I do not care what do U believe or not.
Pro2
12.16mm/11.49mm 250°/257°@1mm

 

Well lets just take look at the valve events for the Pro2 cams.

Intake
Opening:31° BTDC
Peak Lift: 99° ATDC
Closing: 46° ABDC

Exhaust:
Opening: 58° BBDC
Peak Lift: 106° BTDC
Closing:25° ATDC

Intake Duration: 31+180+46 = 257
Exhaust Duration: 58+180+25 = 263

Duration at .050 as listed by Skunk2
Intake: 258
Exhaust: 265

Well that's just my take on things. I personally go by valve events because I didnt have a means to check on the engine.

FYI if you check duration by valve events with RM cams they are dead on to what they are advertised as, Unlike most cam manufacturers.

 

i think what koczeka is trying to say : is that he personally measured alot of cams including the whole skunk2 lineup , and they are far from what skunk2 advertise it to be ..

its interesting that alot of people make good power with the Pro3 , and they SEEM to be a pretty big cam , but if koczeka's measuring is correct , they are not too scary

 

I know he has. I was just adding to the thread not disputing his findings. The problem is there is no set standard on how cams are measure and advertised. Some companies advertise at .050", some at 1mm (0.039") and then comes S2 and they advertise at 0.004". Which would make their (S2) seems ALOT bigger than others.

 

Yes, exactly, thank U!

We measure them the same way, I do not care what anybody else think... TODAs, BC, OEM and a few others like m25 match the "advertised" spec, skunks never.
I now, a few numbers does not mean too much (sorry I have no tool yet to draw full graphs), but when U see 2 cams with max lift, 1mm AND 10mm duration numbers... U can have a basic idea.

This thread is about m25, I had them, I loved them, I know its way bigger then anything else I have hold in my hands (including P3).

 

This can't be correct? maybe som really old cams?

I seriously doubt he used the exact same lift and duration on intake and exhaust.

 

thank you everybody.
I will make you angry: you have given me want to open a new topic on SuperCam! : lol:

 

y is it that the rocket lineup's lift never change ? in the supercams case , it even went lower?

all skunk2 and other cam companies seem to have more lift than rocket's . any reasoning to this ?

 

Duration is bigger.. also the ramp speed / angle are all different as well, just because a cam doesn't have alot of lift doesn't mean its not a SERIOUS valvelift profile.

 

Quote from ALL MOTOR (dd-tech/derek) in the supercam thread (https://honda-tech.com/forums/showth...hp?t=2960385):

hope it's OK that i quoted this.

 

I get my information from the source so if they are wrong than Rocket himself sent me the wrong information. WHICH I HIGHLY HIGHLY DOUBT.

Do you have any experiance with RM Cams?

Alot of smart people think that lift over 12 mm isnt all that hott. Even when Brad/Rlz had cams out they didnt have much lift but had tons of duration.

 

yea I'm not bashing anybody's products. jus curious. if a race port flows hypothetically , 290 cfm at .472 lift , and then 300 cfm at .500 lift , wouldnt u want to increase the lift to .500 instead of leaving it at .472 ? ( comparing the m25 and pro3 from above )