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Old 03-07-2019, 01:45 AM   #1
bgpzfm142
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Question Difference in 8V redblock throttle bodies for LH2.4?

A query for the Brains Trust:

After living life dangerously and reading through the parts manuals, I've noticed there are several different part numbers for B230 throttle bodies.

Once upon a time, p/n 3507443 did Regina as well as LH2.4, turbos and non-turbos, 240s and 740/940s alike.

That was superseded by 3517482 in the 900s, which then took over for LH2.4 turbos.

And 9146896 took over for LH2.4 NA, while 3517480 superseded it for Regina.

Meanwhile with the 240s, 3507443 was superseded by 1357783 from YM 1989 on.

I can see the throttle bodies meant for turbos use a valve husher on the other side of the TPS for the shutter shaft seal (yeah, it's the same part number!), but does anybody reading this know if the diameters of these things are different?

What IS the difference between them, other than the part numbers?
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Old 03-07-2019, 01:01 PM   #2
dl242gt
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To my knowledge the throttle bodies are all the same size. There used to be aftermarket larger ones you could buy. The differences are some small things like using the valve husher as a seal or just updating due to a new series of car models. But generally you can interchange them as long as the throttle switch is correct and fittings are correct.
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Old 03-07-2019, 08:19 PM   #3
bgpzfm142
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Good to know that they can all interchange without dramas. Meaning it's pretty easy then to convert the 'NA' spec ones to be factory turbo spec ones.
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