Crower turbo cams question......
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Crower turbo cams question......
I have obtained, what I have been told to be, Brian Crower stage 2 turbo cams for b series vtec heads.... The exhaust cam looks odd to me, the vtec lobes look kind of flat as if for long duration. Just curious if anybody has any experience with these cams and can confirm this is what they are supposed to look like. Any input helps, thanks!
Last edited by brandynEG; 03-30-2014 at 09:44 AM.
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Re: Crower turbo cams question......
how did the vtec lobes all end up slightly flat like that? I measured all 4 of them with a digital caliper and all four of the vtec lobes were exactly the same heighth. odd.
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Re: Crower turbo cams question......
That's how the lobes were made. They're a long duration lobe. Important differentiation, though, are they Crower, or Brian Crower cams? There's a difference. Looking at them, I'm going to go out on a limb and guess they're Brian Crowers.
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Re: Crower turbo cams question......
They are brian crower cams. So the vtec lobes ARE supposed to look slightly flat for duration? That was my main question. But the journals look oil starved/ burnt? There's no way to clean these up and run them? Sorry dudes I'm a newb.
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Re: Crower turbo cams question......
Yes, the VTEC lobe is supposed to look like that. At least, that's how they come out of the factory looking - I'm not saying they're ideal, or even good, just...that's how they're made.
Yes, the journals look oil starved and chewed. I personally wouldn't put them in a motor that you care about.
Yes, the journals look oil starved and chewed. I personally wouldn't put them in a motor that you care about.
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Re: Crower turbo cams question......
in most cases it wouldnt be worth it, imo. especially when you have alot of dollas invested into the head. just for the cams to bounce around. but, i figured id mention it as an option. and i couldnt tell you the camshafts clearance specs either
#15
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Re: Crower turbo cams question......
Holy ****, the cam is WORN. NOT ground like that. This could be caused by many reasons, point is do not install junk cams. Get a good set, hell even oem anything is better than that crap.
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Re: Crower turbo cams question......
Honestly ever set of Honda cams I have are slightly worn on the journals... even cars that were meticulously built and maintained.
the journals are coated, it's inevitable that some wear will happen and coatings wear off. it's the same thing with bearings and cylinder walls after lots of use... bearings will show slight wear as will the cylinder walls with a slight loss of cross hatch and mild scuffing.
if the journals aren't gouged or deformed and you can't feel any scratches or rough spots with your fingernails then I would run them.
I had a set of Blox type c's in a high compression b20/vtec that had similar wear... still running strong. I can show you a set of cams out of my 49,000 mile high compression b16a2 that ran high grade oil and was maintained absurdly well that still show wear, while the inside of the motor was varnish free. so clean you could eat off of it.
mechanical parts wear, there's no way around it.
the journals are coated, it's inevitable that some wear will happen and coatings wear off. it's the same thing with bearings and cylinder walls after lots of use... bearings will show slight wear as will the cylinder walls with a slight loss of cross hatch and mild scuffing.
if the journals aren't gouged or deformed and you can't feel any scratches or rough spots with your fingernails then I would run them.
I had a set of Blox type c's in a high compression b20/vtec that had similar wear... still running strong. I can show you a set of cams out of my 49,000 mile high compression b16a2 that ran high grade oil and was maintained absurdly well that still show wear, while the inside of the motor was varnish free. so clean you could eat off of it.
mechanical parts wear, there's no way around it.
#17
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Re: Crower turbo cams question......
Honestly ever set of Honda cams I have are slightly worn on the journals... even cars that were meticulously built and maintained.
the journals are coated, it's inevitable that some wear will happen and coatings wear off. it's the same thing with bearings and cylinder walls after lots of use... bearings will show slight wear as will the cylinder walls with a slight loss of cross hatch and mild scuffing.
if the journals aren't gouged or deformed and you can't feel any scratches or rough spots with your fingernails then I would run them.
I had a set of Blox type c's in a high compression b20/vtec that had similar wear... still running strong. I can show you a set of cams out of my 49,000 mile high compression b16a2 that ran high grade oil and was maintained absurdly well that still show wear, while the inside of the motor was varnish free. so clean you could eat off of it.
mechanical parts wear, there's no way around it.
the journals are coated, it's inevitable that some wear will happen and coatings wear off. it's the same thing with bearings and cylinder walls after lots of use... bearings will show slight wear as will the cylinder walls with a slight loss of cross hatch and mild scuffing.
if the journals aren't gouged or deformed and you can't feel any scratches or rough spots with your fingernails then I would run them.
I had a set of Blox type c's in a high compression b20/vtec that had similar wear... still running strong. I can show you a set of cams out of my 49,000 mile high compression b16a2 that ran high grade oil and was maintained absurdly well that still show wear, while the inside of the motor was varnish free. so clean you could eat off of it.
mechanical parts wear, there's no way around it.
Its not the journals that are the concern, did you see the vtec lobe? Take a close look, its smoked.
#18
Re: Crower turbo cams question......
All of the google images I glossed over for this cam look very similar to what the OP's vtec lobe looks like, and his looks as if it's worn uniformly across that lobe, not as if it's been eroded to that kind of peak over time. We should really be asking for higher res photos of multiple vtec lobes. And also the journals don't exactly look scored or anything like that on this cam, just some rotational scuffing.
If the surfaces feel smooth and consistent to the touch with no palpable scarring or gashing, do you really think those marks seen in the journals really make THAT much of a difference?
If the surfaces feel smooth and consistent to the touch with no palpable scarring or gashing, do you really think those marks seen in the journals really make THAT much of a difference?
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Re: Crower turbo cams question......
All of the google images I glossed over for this cam look very similar to what the OP's vtec lobe looks like, and his looks as if it's worn uniformly across that lobe, not as if it's been eroded to that kind of peak over time. We should really be asking for higher res photos of multiple vtec lobes. And also the journals don't exactly look scored or anything like that on this cam, just some rotational scuffing.
If the surfaces feel smooth and consistent to the touch with no palpable scarring or gashing, do you really think those marks seen in the journals really make THAT much of a difference?
If the surfaces feel smooth and consistent to the touch with no palpable scarring or gashing, do you really think those marks seen in the journals really make THAT much of a difference?
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Re: Crower turbo cams question......
Brian Crower cams have polished journals and can be identified with these markings on the end.
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Re: Crower turbo cams question......
Those cams appear to have had spring binding issues that created the "flat tops" you are seeing.
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Re: Crower turbo cams question......
So are these vtec lobes supposed to be like that or not?! I measured all four of the lobes the best I could with a digital caliper, and all 4 where almost identicle in size.
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Re: Crower turbo cams question......
I mean it's a way cam companies get more duration but they should be basically the same height... how far off are your measurements from lobe to lobe?
also aftermarket cams have some form of ID on the cam ends (dizzy side) whether it be an etched or stamped ID. is there anything on the end of the cams?
also aftermarket cams have some form of ID on the cam ends (dizzy side) whether it be an etched or stamped ID. is there anything on the end of the cams?