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'98 '99 S70 V70 Right Front Engine Mount Variations? 2WD Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Chuck W
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Re: '99 S70 Right Front Engine Mount Variation

Post by Chuck W » Thu Jan 10, 2019 5:46 am

abscate wrote:
Thu Jan 10, 2019 5:34 am
Is there value documenting the dimensions on my these engine mounts so we can measure our cars before we order or is the application and fitment are clear?
If you look at the pictures in the links of the first post, it is pretty clear what the difference in the mounts is. It's something you can easily identify by taking a quick look at the mount before you go to order.

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abscate
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abscate

Re: '99 S70 Right Front Engine Mount Variations?

Post by abscate » Thu Jan 10, 2019 5:55 am

I see it in the new one, but I bet when the mount is collapsed it might be harder to figure out

On one the two bolt vertical tang is centered on the rubber mount, the other it is offset to the rear of the car as installed.
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Re: '99 S70 Right Front Engine Mount Variations?

Post by Eddystone » Thu Jan 10, 2019 11:41 am

I'm doing the top torque mount on both my cars when the parts get here. I need to evaluate the mounts down by the pulley and then decide whether to order them. I suspect that they are bad, but will have to take a close look with the wheel off. If they ARE bad, I should have one of each style since my '98 is before the cutoff VIN and my '99 is after the cutoff VIN. I suspect that putting the VIN into a search at an OEM dealer website is the best way to check. FCP were not in doubt concerning which mount my '99 needed. I am a bit surprised that there is no aftermarket version available. I'd also be very curious to know exactly why there are two different mounts made by Volvo. I have a hard time believing that the engine block castings are different. My guess is that they decided that the mount would work better with a slightly different geometry and moved the mounting points on the subframe 3/8 inch to allow that.
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abscate
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Re: '99 S70 Right Front Engine Mount Variations?

Post by abscate » Thu Jan 10, 2019 12:10 pm

Does it transition with the engine oil cooler transition from radiator to biscuit, maybe? Clearance for oil lines no longer needed ?
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Re: '99 S70 Right Front Engine Mount Variations?

Post by Chuck W » Thu Jan 10, 2019 1:05 pm

Eddystone wrote:
Thu Jan 10, 2019 11:41 am
My guess is that they decided that the mount would work better with a slightly different geometry and moved the mounting points on the subframe 3/8 inch to allow that.
It has to do with the RN block and the attachment there...The mounting points on the subframe are unchanged.

The '97 GLT uses the -698. When we put in an RN engine ('01) we needed to switch to the -189, like the '99-00 cars use. No other changes were needed for that mount.

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Re: '99 S70 Right Front Engine Mount Variations?

Post by Eddystone » Thu Jan 10, 2019 1:12 pm

That's beyond me. ;-)
1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
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Chuck W
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Re: '99 S70 Right Front Engine Mount Variations?

Post by Chuck W » Thu Jan 10, 2019 1:27 pm

Eddystone wrote:
Thu Jan 10, 2019 1:12 pm
That's beyond me. ;-)
?

'99 was the first year of the RN motor, which is indeed a different casting from the '98 and earlier N block.

The chassis number cut-off was when they started with the RN motors in the P80's, which was in the '99MY cars.

Trust me, I wasn't happy about having to buy a $100+ mount, when I had a good one from the old engine.

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Eddystone
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Eddystone

Re: '99 S70 Right Front Engine Mount Variations?

Post by Eddystone » Thu Jan 10, 2019 1:39 pm

I need to be educated about what an RN motor is. I know the '99 has variable valve timing while the '98 does not.
1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

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abscate
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abscate

Re: '99 S70 Right Front Engine Mount Variations?

Post by abscate » Thu Jan 10, 2019 3:25 pm

Unless it’s a 99 NA which has no CVVT ...
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Eddystone
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Eddystone

Re: '99 S70 Right Front Engine Mount Variations?

Post by Eddystone » Thu Jan 10, 2019 3:29 pm

Always another wrinkle. ;-) My '98 is non-turbo, but my '99 is the T5.
1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

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