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Serpentine belt, V70 - T6, Differences?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
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Faust
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Year and Model: V70 2004
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Faust

Serpentine belt, V70 - T6, Differences?

Post by Faust » Sun Jul 17, 2016 10:23 pm

As you can see from my other posts, I took the forums advice and replaced the alternator with a failed pulley, with a used alternator from a '04 S80 T6. Hollanders said they were the same. Well, I got the V70 one out, and the T6 one in in about 2 hours (10 minutes on my '64 Plymouth convert). It all went together as it should I have been struggling, off and on, for two days to get the new belt I purchased on. That is a Dayco for the V70 6060719. A few minutes ago I thought to check if the T6 used the same belt. It doesn't, the T6 uses a Dayco 6060724. I don't know how to decode Dayco belt numbers, but I suspect that the 719 and 724, indicate a slight difference in length. The only difference I can imagine is the size of the pulley on the T6 alternator. I just checked an online supplier and they list different numbers for the V70 pulley and the S80 T6 pulley. Looks to me that I am in the market for a T6 belt. Anyone know for sure? Can anyone decode the Dayco numbers (they should indicate length)?
2004 V70
1964 Plymouth Convert (small block)
1967 Dodge Coronet (big block)

Faust
Posts: 221
Joined: Wed Jan 04, 2012 7:22 am
Year and Model: V70 2004
Location: MA
Has thanked: 7 times
Been thanked: 2 times
United States of America
Faust

Re: Serpentine belt, V70 - T6, Differences?

Post by Faust » Mon Jul 18, 2016 6:54 am

Well, I got out this morning and put my mic on the two pulleys (pretty awkward with the installed T6). I get a larger diameter on the T6 pulley of about 3mm. The differences in the Dayco belts is 719 = 71.85", 724 = 72.44". That seems to solve the Dayco "code", drop the decimal point and use the first three digits for inside length. I guess it is time to to try the Dayco 6060724. Surprisingly, that is 50% more than the 6060719. Any better ideas?
2004 V70
1964 Plymouth Convert (small block)
1967 Dodge Coronet (big block)

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abscate
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abscate

Re: Serpentine belt, V70 - T6, Differences?

Post by abscate » Mon Jul 18, 2016 12:45 pm

I could tell you a better idea, but you will have to give me your soul.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

Faust
Posts: 221
Joined: Wed Jan 04, 2012 7:22 am
Year and Model: V70 2004
Location: MA
Has thanked: 7 times
Been thanked: 2 times
United States of America
Faust

Re: Serpentine belt, V70 - T6, Differences?

Post by Faust » Mon Jul 18, 2016 1:32 pm

I could tell you a better idea, but you will have to give me your soul.

“There are but two roads that lead to an important goal and to the doing of great things: strength and perseverance. Strength is the lot of but a few privileged men; but austere perseverance, harsh and continuous, may be employed by the smallest of us and rarely fails of its purpose, for its silent power grows irresistibly greater with time.”
Faust: First Part
2004 V70
1964 Plymouth Convert (small block)
1967 Dodge Coronet (big block)

User avatar
abscate
MVS Moderator
Posts: 20035
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 273 times
Been thanked: 852 times
Trinidad & Tobago
abscate

Re: Serpentine belt, V70 - T6, Differences?

Post by abscate » Mon Jul 18, 2016 2:06 pm

:D :D :D :D

Try Dayco belt 666-666

It will fit. Just try it. Come on...
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

Faust
Posts: 221
Joined: Wed Jan 04, 2012 7:22 am
Year and Model: V70 2004
Location: MA
Has thanked: 7 times
Been thanked: 2 times
United States of America
Faust

Re: Serpentine belt, V70 - T6, Differences?

Post by Faust » Mon Jul 18, 2016 3:28 pm

Try Dayco belt 666-666
"And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name or his number." - Revelations, KJ version

Seriously, I got the belt spec'd for the T6, Dayco 6060724. It went on just like the show and tell videos on Youtube.
2004 V70
1964 Plymouth Convert (small block)
1967 Dodge Coronet (big block)

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