Walbro 190hp & RB20 injectors in and running perfectly! - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-20-2007, 08:18 PM   #1
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Default Walbro 190hp & RB20 injectors in and running perfectly!

They are 270cc injectors (the same as the ones found in a SOHC KA24).

I had to hacksaw the bottom keyway off (it is offset and on the connectors I had it was in the center). Easy enough.......

I also had to change the connectors on the harness (quick disconnect style I yanked of of a saab at pick-n-pull). Soldered and heat shrinked by my friend chris

MAKE SURE YOU USE THE MIATA O RINGS.....NOT THE NISSAN ONES....THEY ARE TOO SMALL!!!

I was going to use the 1.8's like everyone else.....but my friend had these laying in his toolbox. I payed 2.99 for new o-rings....that's it.....I think that is pretty good

This is a great option if you have friends that have swapped out a SOHC KA24 or are upgrading the injectors on their RB20.

I will try and take some pictures, but please feel free to ask any questions or make any comments. I think I am the only person on the forums using these injectors
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Old 02-20-2007, 08:34 PM   #2
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sounds good....i thought the nissan injectors were sidefeed?
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Old 02-20-2007, 08:51 PM   #3
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SR20 and DOHC KA are side feed

RB20/25 and SOHC KA are top feed
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Old 02-20-2007, 09:06 PM   #4
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Quote:
Originally Posted by Sactown_NA View Post
They are 270cc injectors
Did you get them flow tested?


Nice. 2.99 for injectors is a pretty good deal.
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Old 02-20-2007, 09:16 PM   #5
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didn't get them flow tested.....that is the stock flow rating.....but my friend ran them at like 105% duty cycle on his RB before he swapped injectors

I know they work just fine He was making waaaay more power than they should have been able to support
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