
M56 Swap To M66...What'S Needed?
#1
Posted 23 July 2009 - 09:48 PM
I am trying to gather information on what is needed if I want to swap a M66 into my '98 S70 T5 with a M56.
1) Can I use any M66? FWD or AWD source car matters? P2 or P1 chassis source car matters? Or will I have to use a M66 from a FWD P2 only?
2) What other parts will be needed? Clutch/flywheel? Shifter assembly?
I figure I should start inquiring now so that I can pick up necessary parts as they become available...
Thanks in advance for your advice!
1998 S70 T5 M - Black/Graphite, 239whp/317wtq, List of mods
Blackberry unlocking - $10. PM me for details...
#2
Posted 23 July 2009 - 09:55 PM
I belive you need a whole new shifter box and cables, fwd tranny, trans mount, maybe a differnt clutch setup. Hussein will chime in im sure
#3
Posted 23 July 2009 - 10:21 PM
GL.
ps. I found an M66 FWD tranny and was going to do another monster swap, but then I just lost interest all together.
#4
Posted 24 July 2009 - 12:07 AM
You'll also need an AWD right axle, if you get the M66 AWD. since you already have a stick, the mount on the ps rack should work fine, you'll just need to get the trans side bracket with the trans, and possibly mod it for clearance.
No suggestion regarding M66 FWD trans- don't even know if the fork setup is the same, or what axles will work with it. The Ford version is definitely very different.
You can run the M66 AWD in FWD mode without any problems, just loctite the Bevel Gear spline collar in place so it doesn't "walk".
Je' bande pou touis, on 23 July 2009 - 10:21 PM, said:
ps. I found an M66 FWD tranny and was going to do another monster swap, but then I just lost interest all together.
You sound so bored.......

1998 V70 XR M66 10cm2Hotside/Garrett 60-1 Built T5 Motor '03 Ported Head EnemY21Cams TurboTuner 710cc Inj, DP back Dual Magnaflow 14834's May 2011 355WHP(@6400rpm) 347WTq(@4400rpm)@22psi Now with LGSpeed Header & Custom Intake Manifold! BIG 31x12x3"FMIC Currently sporting a vented piston!!!
#5
Posted 24 July 2009 - 12:25 AM
I'm very curious to see the differences between the P2 FWD and AWD versions of the M66. I will probably end up sourcing the AWD version...there were probably more AWD M66's sold vs the FWD versions in the P2 chassis here in North America anyways...
P1 M66's...anyone know anything about the differences vs P2 M66's?
I'll have to look into the single mass/dual mass clutch/flywheel setup...that will be interesting...
1998 S70 T5 M - Black/Graphite, 239whp/317wtq, List of mods
Blackberry unlocking - $10. PM me for details...
#7
Posted 24 July 2009 - 03:01 AM
Je' bande pou touis, on 24 July 2009 - 12:49 AM, said:
Whatever happened with the tune for your stick conversion - was it sorted out?
rj240, on 24 July 2009 - 12:25 AM, said:
I'm very curious to see the differences between the P2 FWD and AWD versions of the M66. I will probably end up sourcing the AWD version...there were probably more AWD M66's sold vs the FWD versions in the P2 chassis here in North America anyways...
P1 M66's...anyone know anything about the differences vs P2 M66's?
I'll have to look into the single mass/dual mass clutch/flywheel setup...that will be interesting...
Can never remember what's P1, P2. M66 AWD is only 2004 or newer, S60R/V70R or V40. Don't think it came in anything else. C30 has FWD M66 - but good luck getting a used one!

1998 V70 XR M66 10cm2Hotside/Garrett 60-1 Built T5 Motor '03 Ported Head EnemY21Cams TurboTuner 710cc Inj, DP back Dual Magnaflow 14834's May 2011 355WHP(@6400rpm) 347WTq(@4400rpm)@22psi Now with LGSpeed Header & Custom Intake Manifold! BIG 31x12x3"FMIC Currently sporting a vented piston!!!
#8
Posted 24 July 2009 - 11:30 AM
M66 AWD
P1 '04.5+ S40 T5 AWD / V50 T5 AWD
P2 '04-'07 S60R / V70R
M66 FWD
P1 '07+ C30 T5
'06+ C70 T5
'04.5+ S40 T5 / V50 T5
P2 '05-'08 S60 T5 / V70 T5
I am curious of the differences between the P1 and P2 M66 models. There are probably more P1 M66's on the road than there are P2 M66's...
1998 S70 T5 M - Black/Graphite, 239whp/317wtq, List of mods
Blackberry unlocking - $10. PM me for details...
#9
Posted 24 July 2009 - 12:27 PM
rj240, on 24 July 2009 - 11:30 AM, said:
M66 AWD
P1 '04.5+ S40 T5 AWD / V50 T5 AWD
P2 '04-'07 S60R / V70R
M66 FWD
P1 '07+ C30 T5
'06+ C70 T5
'04.5+ S40 T5 / V50 T5
P2 '05-'08 S60 T5 / V70 T5
I am curious of the differences between the P1 and P2 M66 models. There are probably more P1 M66's on the road than there are P2 M66's...
There's no reason to suppose that there is any difference where it applies to Volvo applications of the trans. For FWD models, they'd just use a different machining for the diff case, so that it has a single seal instead of the AWD inner/outer, and a different diff casting with no splines for the bevel gear. We already know from Pedro's pics that Ford spec uses a different lever setup - but that entire shifter mechanism comes out the trans in one unit...

.. there may of course be production changes over the years since it's introduction, but I'd reckon it's the same as far as external mounting/configuration. If anyone on here has a newer Volvo with an M66, maybe they could take a pic of the linkage on the trans..

1998 V70 XR M66 10cm2Hotside/Garrett 60-1 Built T5 Motor '03 Ported Head EnemY21Cams TurboTuner 710cc Inj, DP back Dual Magnaflow 14834's May 2011 355WHP(@6400rpm) 347WTq(@4400rpm)@22psi Now with LGSpeed Header & Custom Intake Manifold! BIG 31x12x3"FMIC Currently sporting a vented piston!!!
#10
Posted 24 July 2009 - 12:45 PM
Thanks for the info! Much appreciated!
1998 S70 T5 M - Black/Graphite, 239whp/317wtq, List of mods
Blackberry unlocking - $10. PM me for details...
#11
Posted 24 July 2009 - 01:07 PM
rj240, on 24 July 2009 - 12:45 PM, said:
Thanks for the info! Much appreciated!
From what I could see P2 and P1 M66 side by side the P1 casing is a bit more compact overall. The P1's are also hanging in the engine bay instead of standing on a subframe like with the P2's. The thing to worry about is the availability of mounting holes in the correct location to bolt a rear mount on, which needs to be custom fabricated anyway. The focus M66, same as the one used in the Volvo's, has been mounted in an 850 before so it should fit. Don't know the details though.
Also a fix is needed to lock out the reverse gate when the car is moving in forward gears. 6th and reverse are situated very close next to each other and when there's no lock the shifter will go in to the entrance of the reverse gate when shifting to 5th gear which will effectively block the 5th gear engage. Shifter needs to be positioned right before the 5th gear gate to engage. Next when shifting to 6th and applying to much force to the right the shifter might accidentally enter the reverse gate.
#12
Posted 24 July 2009 - 09:17 PM
lookforjoe, on 24 July 2009 - 12:27 PM, said:

.. there may of course be production changes over the years since it's introduction, but I'd reckon it's the same as far as external mounting/configuration. If anyone on here has a newer Volvo with an M66, maybe they could take a pic of the linkage on the trans..
#13
Posted 24 July 2009 - 11:35 PM
I have a RH drive shaft for the AWD here that has 50 miles on it. I went 50 miles before the angle gear went south and I want to do the M56H swap...
Alex
'98 V70R AWD FWD - M56L - 19T - TT - RICA - 17" Team Dynamics Motorsport - Pro Race 1.2 - 18" Pegs - CJ Porsche 993TT BBK - CarPc
#14
Posted 25 July 2009 - 09:26 AM
#15
Posted 25 July 2009 - 11:43 AM
Dolf, on 25 July 2009 - 09:26 AM, said:
thats sounds nice, how many miles do you have on the swap and what power do you have?
I have an m66 i think its a p1, the one without the snout on the right side axlemount, and im actually only waiting for my ecu to come home so i can run coil on plug with my 4.3 management for the complete swap.
I have noticed that the splines in the m66 looks abit different and i have been adviced to get an axle from the m66 and use splice it with the t5 axle to the wheel. But if yours run fine and have nu trouble with plenty of power i will do that.
DoC
REMEMBER AN GASOLINE ENGINE DOES NOT PRODUCE CO2, THAT COMES AFTER THE CATALYST. BE ENVIROMENTAL FRIENDLY, DITCH THE CAT.
#16
Posted 26 July 2009 - 07:39 PM
#17
Posted 26 July 2009 - 08:39 PM
Dolf, on 25 July 2009 - 09:26 AM, said:
S70 Stick? Auto? What year? US spec axles from FWD don't seem to work as far as the right side is concerned - but that's with AWD M66.
Got pics?
We'd like to see what you did with the ford style levers on the trans...

1998 V70 XR M66 10cm2Hotside/Garrett 60-1 Built T5 Motor '03 Ported Head EnemY21Cams TurboTuner 710cc Inj, DP back Dual Magnaflow 14834's May 2011 355WHP(@6400rpm) 347WTq(@4400rpm)@22psi Now with LGSpeed Header & Custom Intake Manifold! BIG 31x12x3"FMIC Currently sporting a vented piston!!!
#18
Posted 26 July 2009 - 09:44 PM
rj240, on 23 July 2009 - 09:48 PM, said:
I am trying to gather information on what is needed if I want to swap a M66 into my '98 S70 T5 with a M56.
1) Can I use any M66? FWD or AWD source car matters? P2 or P1 chassis source car matters? Or will I have to use a M66 from a FWD P2 only?
2) What other parts will be needed? Clutch/flywheel? Shifter assembly?
I figure I should start inquiring now so that I can pick up necessary parts as they become available...
Thanks in advance for your advice!
I think my main question is . . . why ?
FIRST TO PUT 20G ON AN 850R
Current Car : 2010 VW GTI - Stock
#19
#20
Posted 26 July 2009 - 09:49 PM
turbor850, on 26 July 2009 - 09:44 PM, said:
Why? Why not?
I have the M66 in my V50 (and love the six speeds!), and was considering swapping one into my S70. Figured that the gear ratios should work out well, it would put me a little lower in the RPM range for highway driving (which I do an awful lot of) to get a few more MPG's, and it would be nice to have a six-speed in my S70!
Why would you wonder why?
1998 S70 T5 M - Black/Graphite, 239whp/317wtq, List of mods
Blackberry unlocking - $10. PM me for details...
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