B-B-K

I just wanted to throw in some cold hard facts for the CTR crank pulley since I just installed one today. I searched for what belt to use and came up with belt numbers that had 4 inches of difference in them.

So just to let everyone know, this is what worked for me in a 91 CRX with a B16. I first ran a 25in 3/4 belt. That was to small so I grabbed that and my stock belt witch is to long and went to the parts store. I came home with a Goodyear belt with the part# 4040290 four groove. I didnt realize this, but the last three numbers in the part # mean the length. 290 means 29 inches and 295 would mean 29 1/2in.

So the belt Im running is 29in and it was a snug fit. I had to kinda roll it around the crank pulley like a bicycle chain. Still have some adjustment though.

I will also be tearin this motor down within the next month or so. I will be replacing with a GSR block and my B16 head. So I will take a look at the bearing wear since there is a lot of debate on if they wear on the bearings or not. Will also take pics. The motor, Im sure will see some hard driving, and have some miles put on it before the tear down so hopefully if there is going to be any wear it might start showin.

This is for the searching folks and hopefully clears some things up. I will for sure post pics about the bearing wear.

Thanks

Matt

DelSolDon

interested in bearing and oil pump wear.

doublethink

funny i am about to install one of these in my b16a as well, thanks for the great info. so 29.5 inches would be perfect you think?



post it in the ef forums FAQ thread.

Kendall

Every time I've ever installed one I've used a 295.

vtec y0

Good info

DelSolDon

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B-B-K &raquo;</TD></TR><TR><TD CLASS="quote"> I will for sure post pics about the bearing wear.

</TD></TR></TABLE>

any updates yet?

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B-B-K &raquo;</TD></TR><TR><TD CLASS="quote">I just wanted to throw in some cold hard facts for the CTR crank pulley since I just installed one today. I searched for what belt to use and came up with belt numbers that had 4 inches of difference in them.

So just to let everyone know, this is what worked for me in a 91 CRX with a B16. I first ran a 25in 3/4 belt. That was to small so I grabbed that and my stock belt witch is to long and went to the parts store. I came home with a Goodyear belt with the part# 4040290 four groove. I didnt realize this, but the last three numbers in the part # mean the length. 290 means 29 inches and 295 would mean 29 1/2in.

So the belt Im running is 29in and it was a snug fit. I had to kinda roll it around the crank pulley like a bicycle chain. Still have some adjustment though.

I will also be tearin this motor down within the next month or so. I will be replacing with a GSR block and my B16 head. So I will take a look at the bearing wear since there is a lot of debate on if they wear on the bearings or not. Will also take pics. The motor, Im sure will see some hard driving, and have some miles put on it before the tear down so hopefully if there is going to be any wear it might start showin.

This is for the searching folks and hopefully clears some things up. I will for sure post pics about the bearing wear.

Thanks

Matt </TD></TR></TABLE>

I don't think that you will see any significant damage in a months worth of time.

B-B-K

Well, its been 2 months and Im about to pull the motor for my LS/V build. Im prolly going to be pulling the motor within the next 2-3 weeks so I will deffinitly let you guys know if I run into any bearing or pump wear...will take pics and whatnot.

Oh and the motor saw 10K! Good ole miss shift from 3rd to 2nd instead of 4th

I will let everyone know whats up.

Matt

RedStarGsr

my bro ran one on his on his lsvtec turbo for roughly 5000 miles before pullin it apart and sleeving it. there were small ridges in the main bearings, so truth be told, they do work your bearings a little harder... but im stilll runnin it in my fully built gsr.

Fobtions

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RedStarGsr &raquo;</TD></TR><TR><TD CLASS="quote">my bro ran one on his on his lsvtec turbo for roughly 5000 miles before pullin it apart and sleeving it. there were small ridges in the main bearings, so truth be told, they do work your bearings a little harder... but im stilll runnin it in my fully built gsr. </TD></TR></TABLE>

how do you know it didnt have "ridges" to begin with.

ive had mine since a brand new rebuild on new bearings, and have since inspected em and the bearings looks good as new after 30k . I drive almost 300 miles a week.

blacksihatch

I have the CTR pulley also and have never heard of this issue before.......... I know the pulley is lighter and smaller which allows the crank to rotate faster but i have Type-r oil pump to help assist with providing more oil pressure for my protection........... what about all those other pulley out there billet aluminum light weight ones would or do they have the same problem??

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blacksihatch &raquo;</TD></TR><TR><TD CLASS="quote">I have the CTR pulley also and have never heard of this issue before.......... I know the pulley is lighter and smaller which allows the crank to rotate faster but i have Type-r oil pump to help assist with providing more oil pressure for my protection........... what about all those other pulley out there billet aluminum light weight ones would or do they have the same problem?? </TD></TR></TABLE>

The "type R" oil pump is the same as a GSR pump. There is no special oil pressure increase like most people think there is with an R pump. Its not the oil pressure to be concerned about, its the vibrations that will hammer those bearings.

blacksihatch

Ok so the oil presure no big deal, but the pulley comes balanced from Honda and why would Honda make a CTR pulley for the Big Daddy B18 motor without the harmonic balancer just to F the motor up...make no sense everyone is worried about nothing that why you've notice no prob with your bearings...

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blacksihatch &raquo;</TD></TR><TR><TD CLASS="quote">Ok so the oil presure no big deal, but the pulley comes balanced from Honda and why would Honda make a CTR pulley for the Big Daddy B18 motor without the harmonic balancer just to F the motor up...make no sense everyone is worried about nothing that why you've notice no prob with your bearings... </TD></TR></TABLE>

The pulley isn't made for a B18, its made for the B16B. As far as I know, no "production" cars are sold with it. Its used for N1 enduro racing.. Its not used for 100k miles consumer setups.

B-B-K

Well, its been 7 months now since I have installed my CTR pulley. My B16 has been out for a month now, I just now got to breaking it down to inspect the bearings, so I have about 6 months of wear on the bearings with this pulley. The motor I would say has about 80K on it. The cylinder walls still have the stock hone on them. Its a first Gen B16 made in 1989.

The first pic is of journal 3....I plasta gauged all journals just to see what the clearences were. #3 was at .0022. 1 and 2 were .0015....dead on.

Bearing #3



Bearing #2



Bearing #1



I thoght I would share this with you guys. I didnt do all the bearings just cuz I saw how nice they were and I was only worried about the bearings closest to the oil pump/crank pulley. I was amazed on how perfect bearing 3 still is and how dead on the clearences are still. Friggin Hondas

Matt

SiZ

For the guys with 1st gen B16, did your stock pulley have a rubber dampner in it? Mine didn't when I took it off.. It was the same as my CTR pulley.

insomniac791

Awesome info I installed a CTR pulley on my CRX when I put the motor back together I read alot of Horror stories on this pulley and it feels good to finally see someone tear down a motor so we can lay all the "My friends brother blew his motor cause of this pulley" stories to rest.
Awesome follow up
Matt

Runnerdown

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blacksihatch &raquo;</TD></TR><TR><TD CLASS="quote">Ok so the oil presure no big deal, but the pulley comes balanced from Honda and why would Honda make a CTR pulley for the Big Daddy B18 motor without the harmonic balancer just to F the motor up...make no sense everyone is worried about nothing that why you've notice no prob with your bearings... </TD></TR></TABLE>


The balance of the pulley is not the issue. The fact that its solid and has no dampening rubber makes it sketchy. The vibrations in the crank from combustion can be pretty harmful. For most street cars its not a big issue but look around and see what the real racers are using.....

Combustion Contraption

Awesome post B-B-K.

Ill be tearing down the 1.8 i have been running sometime soon as well in favor of a 2.1l and i will be documenting bearing wear as well.

DEMNTD1

Ok I've had the CTR pulley for about 3 years running with 9K shifts at the DRAGS and some Auto-X recently. I'm almost complete with my 1.8L build, after I pull out the B16B to put in the new 1.8L setup I'll tear down the B16B too see the wear.

Motor was swapped in with 8,000km, I've added about 16,000km, so about 10,000 miles worth of mainly DRAG racing on the CTR pulley.

Swap to be completed by December or January. I'll post up the pics when I do the tear down.

Car still running consistant 13.3 to 13.4 all day long. Stock B16B motor as I received it and performed the swap. Oil changes every 3,000 miles or less due to mainly racing miles only and changing out plugs. No other maintenance has been performed.

Heard many issues and debates over the CTR pulley, but no problems so far for me. I guess been lucky compared to others.

Combustion Contraption

Or you just take care of the engine, and dont do stupid ****.

Justacleansi

Ok... might be a dumb question... but can you use the CTR pulley on B18 blocks? seems like everyone just uses them on B16...

slofu

as long as the engine speed is mostly varied, damage isn't as likely to occur as it is if you find the right harmonic and keep the engine there for longer periods, for example, on the hwy at the right rpm. this pulley was designed for use in N1 racing on the stock b16b CTR engine. so, on a similar engine used mostly for a similar application it shouldn't have such adverse affects. since roadrace and drag engines seldomly see the same rpm for long, and they're typically more meticulously maintained and inspected for wear more often, they can get away with such parts. notice that mfgs seldomly use such parts as stock, especially if they plan to warranty the drivetrain. also, you may see SFI certified harmonic dampers such as the ATI or Fluidampr on oval track cars which use a much narrower rpm range.

Tbone

Just A Quick note.. The ctr n1 pully is not balanced very well if at all.. i had to have 3 balancing holes in mine(not all the way through of course.)

Matty.

I have been daily driving mine for over year now on JDM B18C and no problems ever. I think people are waaay to paranoid about these things. I agree that you should have them balanced though.

And BTW Matt, excellent follow-up.