850 N/A Throttle Plate Swap + CAI

[dbeckwith]

I called two dealers in the USA today and the response was the same-discontinued. I think I will remove my original plate and make it work by removing the plastic piece from disc and make what ever repairs are necessary for the plate to function correctly.

[C@lvin]

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

I don't have a turbo, but I have read that the plates in the turbo models do not have the restrictor attached. I have also read that the plate in the turbo models is not the same size at the plate in the NA models (in case anyone is thinking that they can take one from a turbo).

[bigdaddylee82]

Turbo throttle body is smaller than the N/A throttle body, so the plates won't swap.

If you remove the plastic baffle/lip from the N/A throttle plate you'll have a pretty significant hole/holes to fill in the plate. I'm not saying you can't fill in the holes and make it work, but I can't see how anyone could justify doing so when all you need is a 960 throttle plate to get the same/better results with much, much, much less effort. I wouldn't trust anything short of welding and/or brazing the hole shut, and copious amounts of sanding to have anything close to a resembling a 960 throttle plate.

I didn't see any today, but used 960 throttle plates show up on fleabay pretty regularly, or at least they did when I was looking for one.

- Lee

[db130]

i have 3 new old stock NA throttle plates, send me a message if you are interested.

*EDIT* - 2 have been spoken for.

[morson1]

When I did the PCV-exchange on my car today I also changed the throttle plate (thanks to db130 for selling it to me). The throttle response is greatly improved, most noticable in lower gears due to the lack of power in the GLT. I´m really pleased with this mod and recommend it to you all! Only downside so far is that the cruise control got a bit "nervous", especially at low speeds. I guess it´s because the throttle is more "aggresive" now, maybe hard to handle for the cruise control.

All in all very pleased!

[erikv11]

morson1 how did you modify the NA plate? was it easy?

[tjts1]

Nice to see this modification is being adopted by more people. The CC will adapt with time although I never really use it below 50mph. Its especially useful if you have a manual transmission.
http://volvospeed.com/vs_forum/topic/88 ... try1168946

[div4scpro]

word of caution when swapping the throttle plate. can't find the reference now, but there is a caution in the service manual about setting the throttle plate to the shaft. There is a specific dimension as to how much of the shaft is supposed to stick out of the throttle body where the throttle position sensor engages on the end of the shaft. if the shaft sticks too much out of the throttle body it can cause the throttle position sensor to bind and function improperly. this is adjusted by making sure the throttle plate is fully closed in the bore and the shaft is adjusted away from the TPS. this is possible because the holes in the throttle plate and the shaft are somewhat oversize. we are talking pretty close tolerances here, something like +or- less than 1mm.

[morson1]

morson1 how did you modify the NA plate? was it easy?

I didn´t modify the plate, I exchanged it for the 960 plate.

word of caution when swapping the throttle plate. can't find the reference now, but there is a caution in the service manual about setting the throttle plate to the shaft. There is a specific dimension as to how much of the shaft is supposed to stick out of the throttle body where the throttle position sensor engages on the end of the shaft. if the shaft sticks too much out of the throttle body it can cause the throttle position sensor to bind and function improperly. this is adjusted by making sure the throttle plate is fully closed in the bore and the shaft is adjusted away from the TPS. this is possible because the holes in the throttle plate and the shaft are somewhat oversize. we are talking pretty close tolerances here, something like +or- less than 1mm.

Well hmm, I guessed here.. But the shaft actually were deeper into the TPS with the original plate, to be able to fit the new one I had to pull the shaft out of the TPS perhaps 1-2mm. Everything works for now, we´ll see for how long..