850 N/A Throttle Plate Swap + CAI

Post by **jblackburn** » 29 Sep 2011, 08:30

Reading for ya:
https://www.matthewsvolvosite.com/forums ... =5&t=17920

C@lvin · Post by **C@lvin** » 29 Sep 2011, 08:34

shiloh51933 wrote:This is more less the main reason for swapping the TBP, to un-restrict N/A throttle response. This along with the air box mod has gave many of us with N/A 850's satisfied. Good wrenching. By the way this one of the cheapest and best mods I've ever done to any of my rides.

+1 I whole heartedly agree.

I also got my 960 plate from Daryl Waltrip (they quit selling "mail order" to the DIY folks - please let me know if they have started doing this again)

I immediately noticed a very pleasant improvement in throttle response. Like th OP, I commute about 55 miles round trip per day but it's mixed higway and "urban". I disabled the airbox flap in cold mode, changed the plate, and put in a K&N filter two years and 30K miles ago and it continues to make me smile

Some folks have suggested that the throttle mod will decrease fuel economy. I leave it permanantly in Sport mode and average 22+ MPG (I compute mileage for every tank of gas). I did not experience a change, good or bad, in MPG after the mods, but I did notice when I went for several weeks without the air guide (AKA air dam, skid plate, gravel guard, etc.) that my fuel economy dropped about 1.5 MPG.

dbeckwith · Post by **dbeckwith** » 29 Sep 2011, 09:07

Why not just swap out the whole throttle body?

Post by **jblackburn** » 29 Sep 2011, 09:20

The linkage is different. (850 engine is mounted sideways; 960 is mounted lengthwise). But the plate is the same size; just the 960 one doesn't have that lip on it.

dbeckwith · Post by **dbeckwith** » 29 Sep 2011, 09:30

Thank you. Since I have an upcoming appointment with PCV patient, I should think that would be a good time to also make plate swap. So it is just a mater of finding a plate.

dbeckwith · Post by **dbeckwith** » 29 Sep 2011, 10:04

I just talked with someone at Erie Volvo and he didn't seem to know what I was talking about with respect to the tb plate mod. Does anyone know of another reliable source?

Thanks

C@lvin · Post by **C@lvin** » 29 Sep 2011, 10:15

You should be able to get it from any Volvo dealer and it shouln't be more than around $10 at the most. I seem to recall that the plate and screws together from Daryl Waltrip (in Franklin TN) were around $3-$4 at their discounted price.

The part numbers I have written down (please verify this when you speak with the vendor) are:

3501603-9 Throttle Disc; 943781-5 Screws

I think you can reuse the screws, but I was glad I had new ones because I couldn't get one of them out and had to drill it out.

dbeckwith · Post by **dbeckwith** » 29 Sep 2011, 11:24

Thanks for the info

Post by **erikv11** » 29 Sep 2011, 12:04

Is swapping the throttle plate also relevant for turbos, or just NA models?

morson1 · Post by **morson1** » 29 Sep 2011, 14:20

I live in Sweden and visited the dealer a day ago, the plate is discontinued from Volvo.
Got the same answer when I emailed Waltrip.

Any other source for these plates? Except junkyard..

850 N/A Throttle Plate Swap + CAI

Re: 850 N/A Throttle Plate Swap + CAI