I've been doing a lot of research round the web on 1500 carbs. Basically, since
my '79 engine needs to come out at some point to go into the new shell, I'm
planning on poking around a bit inside, probably checking the rod and main
bearings, replacing the thrust washers (even though they are still in place, it
just makes sense with the engine out.) Compression seems good (last I checked,
I don't remember the numbers offhand), though the car does have the 7.5:1
pistons. I'm also planning on ditching a lot of the smog equipment.
So, I'm looking at cheap ways to get more oomph out of the engine. One way
iscarbs, and I'm looking at several options, and I'm looking for the list's
collective wisdom on what you've tried and what works.
1.5" sigle carbs
A. ZS 150CD4T This is what's on there now. Runs rough until warm, but probably
needs valves adjusted, timing set, etc. Autochoke may be stuck open, and I've
heard that these are a real pain to get working right.
B. ZS 150CD manual choke. I picked up for $40 a ZS 150CDSE from Ebay - turns
out to be the rear carb for a '71-'72 GT6. With the right needle it'll probably
work OK. But no extra oomph.
C. SU HS4. Someone on one of the other MG BBS's uses this in plsce of the ZS.
He used an MGA needle in it (don't know which MGA needle, though). Advantage is
that they're somewhat simpler than the ZS. But it's still a 1.5" carb.
1.5" Dual Carbs
A. dual HS4's. A few of you I know have converted to these. How do they run
with a US dizzy and 7.5:1 pistons, if you're set up that way? Sourcing the
manifold doesn't seem to be the easiest thing, though...
1.75" single Carb
A. ZS 175 CD, from MGB. Advantage, it's bigger than the 150CD. Disadvantage,
it's still a ZS!
B. SU HS6 or HIF44. Advantage, bigger venturi, not a ZS. Disadvantage, what
needle to use?
Weber DGV
I know some of you have Webers and like them. They seem easy to set up. But
they're a little pricey, given the other things that the Midget will definitely
need.
So if you've read this far, what say you all? Any pearls of wisdom? :-)
TIA
-=Chris
Chris King - cbking@alum.rpi.edu
http://members.home.net/kvcbk/
---------- Original Message ----------------------------------
From DLancer7676 at cs.com
Date: Tue, 8 Jan 2002 22:22:35 EST
>In a message dated 1/8/02 8:06:37 PM Eastern Standard Time,
>ptegler@cablespeed.com writes:
>
>
>> turn that puppy around!
>>
>
>I am working on a set of SU HS4's to put on the engine. If that doesn't work
>out for any reason, and I go back to the DVAG, I will look at doing just
>that. Thanks Paul.
>
>--David C.
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