Trucks
North West Datsun Enthusiasts Forum : Datsun : Trucks
Topic: Hey....just wanting some help...
Author Message
datsunboy
Enthusiast
Enthusiast
Avatar

Joined: 28 March 2003
Location: New Zealand
Posts: 287
bullet Topic: Hey....just wanting some help...
    Posted: 24 June 2003 at 2:52am
I've been looking for some twin carbs for my L20B.....it has 44mm intake valves...86.5mm pistons, extractors, exhuast, and a mild cam

I've found some 40mm Dellorto's going for pretty cheap...I know I should probably have 45's....but how would 40's work?....cause they are really cheap:)
http://geocities.com/datsun510power
IP IP Logged
Hainz
Guru
Guru
Avatar

Joined: 03 December 2002
Posts: 3122
bullet Posted: 24 June 2003 at 8:42am
My Mikunis twin 40s worfed great on my L-20b when I had another 510. Went very well.
I just know nothing about Dellortos.But they are cheaper to get.
IP IP Logged
Bleach
Guru
Guru
Avatar

Joined: 04 December 2002
Location: United States
Posts: 4806
bullet Posted: 24 June 2003 at 9:51am
Wouldn't the slightly smaller barrels give you a bit more vaccume at partial throttle and help for a smoother, more torquey midrange compared to the 45s? I think they should work fine. The 45's might grab an extra 3-5hp at 6000 rpm right? Not that big of a deal I think.
IP IP Logged
nwdeorg
Admin Group
Admin Group
Avatar

Joined: 25 January 2003
Location: United States
Posts: 287
bullet Posted: 24 June 2003 at 11:21am

You can run really small venturies in the 45's, but unless you are going for ultimate power, then the 40's would be better for everyday driving. But for driveability, and easy of adjusting and tuning, personally I would stick to the SU's.

Randy

Acckk... there's bondo dust on my mouse pad!

IP IP Logged
tdaaj
Expert
Expert
Avatar

Joined: 02 March 2003
Posts: 2367
bullet Posted: 24 June 2003 at 8:47pm
hey has any body ever give any thought to running holley 500's on there 4 bangers?
numourous amount of datsuns
1 jeep
2 troopers
1 chevy
70 chrysler newport 383 power
71 Plymouth Fury 3 (girlfriends car)
IP IP Logged
layinga521
Enthusiast
Enthusiast
Avatar

Joined: 12 June 2003
Location: United States
Posts: 611
bullet Posted: 24 June 2003 at 10:35pm

I've always been a fan of WEBER personally. Chack out fastfreddys.com or performance parts whse. at webercarburetors.com.

both places had decent prices when I got mine. I wouldn't choose one over the other due to price though 'cause you really do get what you pay for. I dont know JACK.... about dellortos though

IP IP Logged
datsunboy
Enthusiast
Enthusiast
Avatar

Joined: 28 March 2003
Location: New Zealand
Posts: 287
bullet Posted: 24 June 2003 at 11:39pm
ok...thanks guys....I'll see if he's still got them :)
http://geocities.com/datsun510power
IP IP Logged
datsunboy
Enthusiast
Enthusiast
Avatar

Joined: 28 March 2003
Location: New Zealand
Posts: 287
bullet Posted: 25 June 2003 at 1:48am
Oh...and anyone know what size chokes, Jets, Emulsion tubes e.t.c I would want to use?
http://geocities.com/datsun510power
IP IP Logged
Bleach
Guru
Guru
Avatar

Joined: 04 December 2002
Location: United States
Posts: 4806
bullet Posted: 25 June 2003 at 10:39am
Hainz should know. All I know is my single Weber comes stock with 140 primary, 135 secondary and I've got 140 jets in both now. The shop I bought it from did that for me because I told them I have a Crane Cam. Wow, i bet that added 2.3 hp!
IP IP Logged