Help diagnosing engine noise - problem solved?

[striktlyaccord]

Unorthodox Racing recommends a specific belt for the underdrive pulleys right in the installation instructions.  Once I find them, I can post the belt's part number.  I know it's a Gates belt.

Also how much is the tensioner, and what's the part #?

[MyNameIsThien]

There is 2 different part number I found.

31170-PNA-023 - $80.36

31170-RAA-A02 - $53.50

Don't know the difference between them, but here is the link from Hondapartsunlimited.com

http://www.hondapartsunlimited.com/prdd ... ion=ENGINE MOUNTING BRACKET (L4)

[striktlyaccord]

^ Thanks.  I think Honda frequently comes out with updated parts and hikes the price up for "newer" models (could be wrong though).

On a side note, it seems like everyone who's experiencing this noise also has aftermarket pulleys.  It sucks that this mod seems to be the cause of this tensioner failure... if that's what the problem actually is

Anyway, I found the installation instructions from UR, and here's exactly what it says for the belt (these instructions apply to the 02-06 rsx-s, 04-06 tsx, and "02-07 accord 2.4l sohc 16v" LOL:

"If the car has 30,000+ miles or if the belt has cracks, we recommend purchasing a new belt.  We recommend the use of Gates brand belts.
Accessory belt:  RSX - Re-use the existing stock belt or purchase a new stock size belt.
Accessory belt:  TSX - Use Gates K070683 (69.09 degrees or 1755mm)."

Maybe I goofed when I bought the pulleys by following the recommendation for the RSX and just grabbing a new OEM belt.  Maybe I should have followed the TSX recommendations and picked up a new sized belt.

Does anyone know the size (in mm) of the Accord's OEM belt?

[k24low20z]

Gates K070683 http://www.rockauto.com thats the belt the TSX guys are running..

[xodus]

the stock accord is 70in which is 1778 so that tsx belt from ur wouldnt work

[striktlyaccord]

Hmm, it seems that the site you provided says that the Gates TSX belt is model # K070690 (15/16" x 69 1/2"), while the Gates belt with model # K070683 (15/16" x 68 7/8") is recommended for the CRV, but not the TSX.  As a heads up, the stock Accord belt's dimensions are 15/16" x 70 3/4".  Input?

Also, here's some good links from Gates about the parts in question... maybe they'll help out with diagnosing my problem:

http://www.gates.com/file_display_common.cfm?thispath=Gates%2Fdocuments%5Fmodule&file=AutoTTHowTensionerWorks433%2D0796%2Epdf

http://www.gates.com/downloads/download_common.cfm?file=TroubleshootAccessDrives.pdf&folder=brochure

[thisaznboi88]

http://tsx.acurazine.com/forums/showthread.php?t=666337

this should help you guys.

http://www.tsobad.com/jtso/Images/Pulle ... 20Belt.jpg

that is for the UR SS.

[striktlyaccord]

^  Yeh, I have those install intructions printed out and used them when I had the pulleys installed.  And btw, that 2nd link your provided doesn't work for me.

Get a little shorter belt. Not to short but just a tad shorter then the OEM belt.

What's your definition of a "tad" shorter?  The stock Accord belt is 70 3/4", while the recommended replacement from Gates (part# K070683) is 68 7/8".  That's almost a 2" difference in length, which is more than a tad to me.  Plus, if my tensioner/pulley is already shot, won't buying a different belt solve nothing?

[suleman_manji]

im willing to bet its the auto-tensioner.


just replaced mine due to knocking and its fine now.

[k24low20z]

^^ yeah but the cause of that going bad is related to not using the proper size belt for the pulleys..

[striktlyaccord]

im willing to bet its the auto-tensioner.


just replaced mine due to knocking and its fine now.

Do you have a part # and price?  Also, how difficult was the install?

I called UR today and they basically said that the smaller belt is highly recommended.  I guess the RSX-S owners don't need to worry about getting a new belt with the pulleys because the pulleys are pretty close in overall diameter to the stock pulleys.  However, TSX and Accord owners experience a decent enough size difference in the UR pulleys versus the stock ones to warrant a belt length change.

[suleman_manji]

im willing to bet its the auto-tensioner.


just replaced mine due to knocking and its fine now.

Do you have a part # and price?  Also, how difficult was the install?

I called UR today and they basically said that the smaller belt is highly recommended.  I guess the RSX-S owners don't need to worry about getting a new belt with the pulleys because the pulleys are pretty close in overall diameter to the stock pulleys.  However, TSX and Accord owners experience a decent enough size difference in the UR pulleys versus the stock ones to warrant a belt length change.

http://www.rockauto.com/catalog/x,carcode,1425417,parttype,11659,a,www.google.com%2BSearch%2Bfor%2B2004%2BHONDA

[xodus]

the tsx belt is using 4070685 gatorback its 69.25 .... the next belt size up is 4070690 69.75.. which in terms should be enough to relieve the tension

[striktlyaccord]

Can anyone confirm that buying the belt from Gates (part # K070683) has fixed their noise issues?

[striktlyaccord]

Damn, I gotta get this fixed asap.  When I turn on the a/c and then turn the steering wheel to the extreme right or left, the squeeling turns into a clapping noise.  Spraying the tensioner pulley bolt with some silicone spray helped a little (thanks Tim), but it doesn't last long before the sound comes back.  I hope the shorter belt does the trick.