I have access to a set of 50mm sidedrafts (NOT CHEAPLY ) and am wondering if anyone has any ideas on what sort of choke sizes and jets i should use for a fj20 motor ?

Also what type of linkages i sholud use cause the ones on my mikuni's are stuffed....

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70' 1600 FJ20et - Under Construction 10/1/09
71' 1600 FJ20 DRIFTER - R.I.P 13/9/08
92' R32 Gts-t DAILY DRIFTER

Depends on what valve timing you are using and for what pupose the vehicle is used for. FWIW. 42 chokes 4.5 aux. F9 tubes 150 main 150 air 55F6 idles. This is a starting point and wont be too far off for a hot motor.ie 74 cams

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A little knowledge is a dangerous thing.
www.datsport.com

"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

Sorry I forgot the linkages. IMHO You would be best off with the magard type linkage. Twin cables acting on a rocker arm mounted ontop of the carbs. Dont know where to get these at the mo. Dont get cheapies as the pivot pins wear quickly.

_________________
A little knowledge is a dangerous thing.
www.datsport.com

"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

Hey from what ive heard and read over the last few years Ive only seen one type of 50mm weber... the racing ones, from mem they dont have (idle) curcuits, so cant really be used on anything that needs low-mid range drivability...
Has n-e1 heard the same?
Rob

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"Stroked is fun, but I'ld rather get blown"
"Redlines are merely suggestions"

my shrinking garage is down to.....
2x 1600s
1x GQ Tray back
1x 300ZX
1x FZR600

im trying to sell a pair of 40DCOE32 webers at the moment and they would suit u well for driveability and will give ur FJ gobs of throat while being very driveable

they were on a '69 alfa gtv and on a side-draft manifold to suit

they have been recenty r/cnd. with new seals so they are almost as new

interested?

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you are not a beautifull and unique snowflake...

Sorry mate but no way ! i'm running 44mm solexes ATM but they are ratshit and i don't like the idea of goin down a size of carbs... Driveability who cares at WOT !!!

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70' 1600 FJ20et - Under Construction 10/1/09
71' 1600 FJ20 DRIFTER - R.I.P 13/9/08
92' R32 Gts-t DAILY DRIFTER

u think going from 44 solex's to 40DCOE WEBERS is downsizing?

hint:

twin 40DCOE's= 4 barrels, 4 venturies, 4 x 40 =160mm

twin solex 44's= 2 barrels, 2 primary venturies, 2 secondary venturies, 2x44=88mm

plus look at where the air has to travel in a solex, in and round and through where it gets split from 2 into 4 then into the engine, efficient?

look at the webers.... in and straight through the barrels into the engine
4 cylnders, 4 barrels, 4 valves, 4 fuel jets.
a setup this efficient works better than most others its size again

no comparison

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you are not a beautifull and unique snowflake...

ayjay how much whould you be asking for the webbers ?

well i only recently spent $600 on them so i cant part with them for nothing
(they are without ram pods)
make an offer...

that was me by the way
what engine u want them for?
i could give u the manifold and air cleaner/box to suit...

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you are not a beautifull and unique snowflake...

well its for an l16 bored out to 1770cc, lumpy cam, its had fair bit of head work ,flat tops. Iv got su's on it now but i dont realy like them all that much.Where are u at ? goldie?im at byron

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bbhc
2481

nah im in sydney

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you are not a beautifull and unique snowflake...