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Throttle Body?


Danpeal

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I know the 850 N/A will fit on a turbo, it's ~ 3" versus ~2.5"

I know Pras did it, but he also did a turbo upgrade at the same time. I'm not sure why Chuck says it's bad, but I'll trust him on it. *closes search window for NA throttle bodies**

I would guess it's just like using 3" intercooler piping. Yeah, it's higher flow, but it's toooo much volume for that poor little stock turbo!

Do all of the N/A 850's use the larger throttle????

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Do all of the N/A 850's use the larger throttle????

Why such an A-- the 93 an 94 N/A 850's used a variable intake runner which in turn made for a different throttle but I'm sure you took that in consideration :rolleyes: Why post if you aren't helping, these are legit questions, if they weren't there would not be a thread on this topic with this many posts.

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Why such an A-- the 93 an 94 N/A 850's used a variable intake runner which in turn made for a different throttle but I'm sure you took that in consideration :rolleyes: Why post if you aren't helping, these are legit questions, if they weren't there would not be a thread on this topic with this many posts.

The answer is no. Volvo abandoned the dual runner intake manifold starting in 95 or possible sometime in 94. At that time, they used the exact same intake manifold as the turbo cars. The only difference is that the throttle body opening on the NA cars was bored larger to match the larger throttle body used on the NA cars. But the manifold casting itself is the same.

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So all N/A TB's are larger and can be used?

YES. 100% bolt on; 100% plug and play bolt pattern, same throttle cable, same intercooler piping, same everything.

The NA TB is HUGE compared to a turbo TB - a turbo TB fits INSIDE of an NA TB with room to spare! They are larger than the overbored turbo TBs as well. However, they are TOO large IMO.

An overbored stock turbo TB is the best upgrade as far as being appropriately sized to the engine. A big bore TB can also use a Samco TB hose no problem.

BTW the NA TBs are all the same regardless of year. They are the same size as the 960 TB as well.

One huge downside is that you will NOT be able to fit a Samco throttle body coupling over an NA TB on a turbo car no matter what. However, if the stock TB hose is really old it will be deformed enough that you can muscle it on there, but the stock TB hose is a POS.

Also, obviously you have to bore the intake manifold opening to match the larger TB (NA, overbored stock TB, etc).

BTW we are releasing big bore TBs. I have been testing it on my car for some time now. I was shocked by the results. Off line driveability is 10xs smoother and power delivery is much more linear and because of the larger size you don't have to lay the hammer down all the way every time you want power - passing on the highway or accelerating becomes effortless. It feels like a big NA engine and doesn't have any of the low rpm sluggishness that it did with the stock TB. It feels very peppy - hard to explain. But after having it on my car I will never go back.

They are going to be very nice - ours use a BRASS alloy throttle plate like they should as opposed to an aluminum plate. Aluminum has the same expansion rate as the aluminum TB which can cause sticking over time, and the TB wears the aluminum plate since it is so soft. You should always stick with a brass throttle plate if possible. Aluminum is much cheaper which is why it is often used, but I would rather make a top quality product than cut corners to save a few bucks.

It is not a released product yet, so pricing and ETA has not been finalized. So please don't bombard me with emails and PMs. It will be released when it is ready. It will be very soon but I am not going to commit to dates, period. As far as price all I can say is that it will be VERY competitively priced. Very.

- Slater

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