Solex side draft jet sizing

Engine, Transmission and related drivetrain.
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gumby510
Posts: 86
Joined: 18 Sep 2011 10:59
Location: Appleton wisconsin

Solex side draft jet sizing

Post by gumby510 » 02 Jul 2019 18:57

Hello everyone, im looking for some guidance. I have a l18 with a a87 peanut head biggest valves you can fit in with a quite aggressive cam that has been running great the last 6-7 years on a weber 32/36. My end goal is to convert to efi but I seem to be taking my time doing so. So in the mean time wile I gather more efi components im going to run twin solex 40mm sidedrafts.

I have 2 different engines ill end up running these on. The current L18 (unknown cr) and my 2.3L big bore z22 (currently building around 9.2-10cr). What id like to know is.

1. What size jets for the L18

2. What size jets for 2.3L builds

Im trying to get a ball park of where I should start.


Thanks

Gumby
71 PL510
92 rhd 180sx
01 s2000 aka skidmark
04 is300 manual
03 wrx winter car

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Tedman
Posts: 123
Joined: 01 May 2008 22:06

Re: Solex side draft jet sizing

Post by Tedman » 05 Jul 2019 21:47

FWIW, on an L20B bored 1mm with dished pistons, peanut head, 44mm intake/35mm exhaust valves, .480"/280* cam and Mikuni 44s with 34mm chokes I'm running 160 mains, 220 airs, 57.5 pilot and 2.0 needle valves. Runs great on our shitty 91 Octane CA gas.

User avatar
gumby510
Posts: 86
Joined: 18 Sep 2011 10:59
Location: Appleton wisconsin

Re: Solex side draft jet sizing

Post by gumby510 » 08 Jul 2019 19:03

thank you, this is greatly appreciated.
71 PL510
92 rhd 180sx
01 s2000 aka skidmark
04 is300 manual
03 wrx winter car

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