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1776 engine, what carb/s??

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plimthing Learner Dubber

19 posts · joined Apr 2014 ·

#997440
Just an idea in my head, going up to 1776 what carbs are best suited? Currently running stock 1600 with a 34-3. Whats smallest carb possible without hindering performance? I don't want ridiculous performance just a nice bit of grunt under my right foot!

Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 ·

#997456
plimthing wrote:Whats smallest carb possible without hindering performance?
All carbs will effect performance

I have run a 1916 with a 34 Pict and I have run 1600's with dual DRLA 40's

A 1776 with a 34 Pict, mild cam and exhaust would give you a 20-25% increase in power.

You wont shred tyres but you will notice the difference
Futue te ipsum!!!

plimthing Learner Dubber

19 posts · joined Apr 2014 ·

#997460
was thinking twin 34's (weber or baby dell's), wasn't planning on changing cam as idealy didn't want to split case. Recently changed bearings and car has done approx 500miles since with no problems. Just want that 'little bit extra'.#
Good to know that the stock 34 will be ok on a larger cc engine.
I didnt want to put too small a carb/s on a bigger engine that could make engine possible run really bad through not enough fuel/mixture.

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#997461
Bizarre wrote:
plimthing wrote:Whats smallest carb possible without hindering performance?
All carbs will effect performance

I have run a 1916 with a 34 Pict and I have run 1600's with dual DRLA 40's

A 1776 with a 34 Pict, mild cam and exhaust would give you a 20-25% increase in power.

You wont shred tyres but you will notice the difference
Good answer Barry

I've seen a 34 PICT running on a 2.2 litre, anything can 'work', it's a trade off, performance to simplicity, power to torque. A million combinations out there, some are better than others.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#997462
A carby is a fuel metering device, the air that goes thru it gets fuel mixed with it, that is what it does, hopefully at a consistant 14:1 Air:fuel ratio. A bigger engine pulls more air through the carb, the carb will still mechanically add the fuel, it's what it does.

I have taken 48 IDA Webers from a 2.8 litre and used them on an 1835, no worries, the jetting changes are more about setting the carb to match the style of enging/power delivery. A Weber jetted for a Alfa will need different jetting than a VW

The smallest Weber or Dellorto dual throat carbs made are 36mm which work well on a smaller engine, 1600-1800 cc
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 ·

#997475
plimthing wrote:Currently running stock 1600 with a 34-3.
plimthing wrote:, wasn't planning on changing cam as idealy didn't want to split case.
You are going to have to split the case to make it a 1776
Futue te ipsum!!!

plimthing Learner Dubber

19 posts · joined Apr 2014 ·

#997477
bugger, of course i am, silly me! wasn't thinking when i wrote post. Machining will well and truly bugger my rods if i don't take them out before hand!!
Well spotted!

adlbeetle66 Under the car.........again!

1,476 posts · joined Aug 2014 ·

#998450
Ive got a 44IDF Weber Dual Throat Single Stack on my 1776!!

adlbeetle66 Under the car.........again!

1,476 posts · joined Aug 2014 ·

#998452
Here is a pic (if it will work...)

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Sbug 71 Seriously Crusin Dubber

123 posts · joined Jul 2011 ·

#1003096
G'day Dubbers,

I need a replacement carbie for a baja I just bought. I was told it's 1800cc but I'm going to assume it's just a standard 1600 twin port. So, I've heard that a single carb setup is not going to be very effective for around town general driving and I should get a twin carb set up. I'm worried that twins will create problems with sand on the beach and would prefer a simple single down draught for ease and cost effectiveness. What are your thoughts/opinions? adlbeetle66, I really like the look of your setup. Did you have to replace the intake manifolds?

Cheers.

adlbeetle66 Under the car.........again!

1,476 posts · joined Aug 2014 ·

#1003466
You can see what i did here - i bought the weber as a kit and put it on..
PM me for more info...
Looks better in the pic above...😎
Cheers

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Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 ·

#1003496
You "should" run pre-heat tubes
Singles work so much better with them
They keep the fuel atomized - in suspension

They are also needed to stop the carb spinning in the end castings
You will need to make up some sort of bracket otherwise
Futue te ipsum!!!

Sbug 71 Seriously Crusin Dubber

123 posts · joined Jul 2011 ·

#1003517
Pre-heater tubes.... are they the ones that run from the big manifold tube to the exhaust manifolds near where they attach to the heads? The EMPI kit I'm looking at has them included I think.

Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 ·

#1003522
Sbug 71 wrote:Pre-heater tubes.... are they the ones that run from the big manifold tube to the exhaust manifolds near where they attach to the heads? The EMPI kit I'm looking at has them included I think.
That is them. They fit into that very cast bit on the bottom below the tubes
Futue te ipsum!!!