I have been wanting to get colt cams for quite some time after reading all the positive reviews about them. I have received the specs for them and I thought it would be interesting to share with you all.

There are 3 grinds,

First grind:

INT 264 ADV DURATION / 192 @ 0,50 / .420 LIFT
EX 264 ADV DURATION 192 @ 0,50 / .410 LIFT
powerband: 3500-6700rpms

Second grind:

INT 278 ADV DURATION / 198 @ 0,50 / .430 LIFT
EX 278 ADV DURATION 198 @ 0,50 / .420 LIFT
powerband 4000-8000rpms


The third grind is called tri-flow, the principle is having one intake valve opening earlier, longer and deeper than the other for a swirl effect, a concept exclusive to coltcams but that has been used and experimented for a very long time by other people. According to them it helps with low and midrange without sacrificing top end.

PRIMARY INT 278 ADV DURATION / 198 @ 0,50 / .430 LIFT
SECONDARY INT 264 ADV DURATION / 192 @ 0,50 / .420 LIFT
EX 276 ADV DURATION 196 @ 0,50 / .405 LIFT

They say all 3 grinds run stock valve clearances and are straight drop in. I wonder if the tri-flows can be ran on stock valvetrain and rev limiter while I save up for aftermarket ones.

Anyone have anything to say about these?

 

interesting. Id like to see how these perform. also what is the cost of these if you don't mind me asking. pm me if you don't wanna post here.

 

looking forward for dynos on the grind 3.

 

between 300 and 375 depending on the grind, for both cams. Quite good for cams with a 5 year waranty.

 

thats cool about the 5 year warranty but you can get crowers for $306 on summit.

 

i know this is the NA section but here are the results of a colt cam on my SOHC D16...

yes, D16 SOHC with flat tq up to 9000rpm...



geoff is a genious.

 

Was that a custom grind? Very nice powerband.

 

its a race spec tri flow he did for me. yea pretty custom but that makes it even more impressive that he could nail it on the first try...

 

Think again, Honda does the same thing.

 

Referring to the D series "vtec-e" engines here?

 

All vtec b series have "tri-flow" also.

 

so how does that work if its only driving off one lobe in VTEC?

 

In Vtec your looking for maximum flow, no need for the offset duration.

 

Obviously in VTEC, both valves are opening the same. Its the primary lobes that are different from each other.

 

LOL

 

obviously. i just found it interesting you took the time to point out that all "vtec" b-series engines have it when it would be more beneficial on a non-vtec 2 lobe big lift/duration cam shaft.

"LOL"

 

LOL indeed. I was just pointing out an example where Honda used different lobes to create swirl like the triflow, nothing more.

everyone is so on edge here, damn.

 

i think its leading off comments with "obviously" which would infer the other person is oblivious.

 

Corrected

 

Fair enough. Sorry if it came off that way.

 

I know this is a different application, but they are still Colt Tri-Flow cams..

I had them in my '96 Ford Probe GT and I was very impressed with how broad the powerband and torque band was with them. I did the testing on them for Geoff and was very pleased with them in my car, so I would assume that they would be a nice grind for a different motor being that it is the same concept being applied.

I don't have my last trip to the dyno scanned in, but I can see if I can find the sheet (it was a little while ago now)

 

bro quit spamming the **** out of this section.

 

To add to what I said earlier..I was informed by Geoff himself, that for my particular build he did not recommend a tri-flow grind..though in my case I am revving 3k+ rpm over stock. But he did say for very high rpm cases he recommends a 'straight' grind.

'bro' I am not spamming anything. I am asking honest questions that I have that others have experience with, that I do not. I am building a very unsupported platform and am turning to a very well supported line of platforms for ideas and advice that I cannot find otherwise.

I happened to stumble upon this whilst I was searching for something else, and seeing that it is a newer topic I figured I would chime in with my experience on this EXACT kind of cam technology from Colt, whom I have worked very closely with on my platform. The technology and idea is the same across any platform behind 'Tri-Flow' cams.

Seeing as I am building a n/a motor, of course my questions are going to be concentrated in a specific forum.

 

What does your input about a probe have anything to do with the OP's question? If your looking for information, there is a search bar. Use it, that's what its for.

 

why do you care so much? if you don't wanna read it click the back arrow at the top left of the page lol. he has a motor that Im sure maybe a small handful actually mods so any imput on anything related to what hes doing is probably very interesting to him.