4AGE on weber carbs?

[ratta tat tat]

Hey guys, I'm a total noob, basically wanting some help choosing and setting up a 4AGE for my MK1 escort.

I already have one italian DCOE40 carb, and figured buying a 4AGE twin side draft manifold and one more carb?

Which version 4AGE suits carbs best- smallport, bigport?? And what sort of power could I expect from a standard 4AGE on carbs with hiflow exhaust?

Thanks

[ratta tat tat]

No responses? Is it because I have Ford instead of a yota?

Well carbies aside, can someone please give me the rundown for best motor and options for 4AGE conversion? Small port, bigport, block & head combinations? etc

[phil-ma70]

smallport if ur keeping it na mate

[oldcorollas]

might be difficult to get car registered when taking off the injection, and putting dirty carbs on it. the whole emissions thing.
it will run better on injection, but the smallport would be better if you have to use carbs due to port velocity.

the 20V 4AGE's have ITB's already if it is the sound you are after.. and they have more powah

[ratta tat tat]

Thanks guys. The emissions issue is a good point if I want it engineered. The car is 1970 so obviously came with carb but if I put in EFI motor, then all pollution gear must be retained yeah. ITB's on a 20V, now that would be sweet.

I'm spewin a 16V 4AGE smallport (160K km's) sold on ebay last week for $200 next suburb over from me. They don't go for that cheap very often

[jfallen]

The 4A engine series came with a carbie. The good old 4A-C. The importnat fact about this is, that the engine number is just 4AXXXXXX. Critically the same as the twin cam engine numbers. Just tell them it's a 4AC with a twin cam head Which is essentially true.

If you're after a full carb set-up, I've got one, from modified head to Airfilters for sale. Flexible on price so if you're keen make a serious offer, but I'm in no rush to sell it.

Cheers
Jordan

[andrew_mx83]

we were going to do this for a mates 4ag powered mini, plan was for twin 40mm dellorotos, standalone ignition and some "warm" cams

200hp was the goal with that setup


have a look on youtub, its been done plenty of times and really gets the little 4ag screaming



escort love!!!!!!!!!!

[MRMOPARMAN]

theres a class of boat racing called 1.6L hyrdoplanes. most of these guys use stock 4age's now (instead of the old 1.6l kent ironically)

my mate races one with some success. he runs bigport motors with twin 45mm webers. i think they are choked down to 42.. cant remember.

your main trouble will be what to do with the ignition. my mates first motor ran a scorcher ign locked, and a camira? ignitor which retarded the motor for easier starting.

his current motor he machined down a sigma dizzy to fit.

running small ports or bigports both have pro's and cons. my mate ran the bigport as they have lighter internals and slightly hotter cams. however he has a little trouble with air velocity down low.. which is the small ports strong point.

in the end, they will be much or muchness. id be modding a inlet to suit a blacktop motor if it was me and i was deadset on using carbies.

btw, ive heard the "4ac motor with 4age head" trick doesnt work in victoria.

[ratta tat tat]

Wow, some great info thanks fellas. A lot to think about. I found a link to 4AGE with webers and they sound amazing.
4AGE WEBER - YouTube

I wonder what was going on with the ignition there? For those interested, here's a little pic of my esky

[jfallen]

btw, ive heard the "4ac motor with 4age head" trick doesnt work in victoria.

It does if you get the roadworthy with a 4AC and then swap it out when you get home.
Changing the engine number is as simple as a piece of paper (or at least it is over here.) Walk into DMV a week later and if they give you any lip about the engine number change tell them the old engine was a clunker and gave up the ghost.

Note things are still way to loose in SA I've been pulled over with a straight out side pipe and not got a defect.

In other news to solve the ignition problem you can use a FORD EDIS kit from Autosport Labs. This is the MeagJolt Lite Jr. Which oddly, I also have a fully assembled one for sale for some reason. This runs a trigger wheel on your crank and waste spark ignition. Fully programmable. You can either run a TPS or vacuum advance (possibly a combination of both.) Have a gander at their website and see what you think. I bought all this kit ready for a 4AG->RT40 corona project that got scrubbed due to me being made redundant in 2008 and having to leave the car in Broken Hill. Note MegaJolt have nothing to do with MegaSquirt to the best of my knowledge.

JA

[andrew_mx83]

that looks real nice mate. i love those old girls!

ignition is easy -piss off the dizzy all together
http://www.autosportlabs.net/Megajolt_Lite_Jr.

they are about $160, the rest of it is available for next to nothing a pinch-a-part etc

mrmoparman was your mate running the chokes because of a class restrictions or in an attempt to pick up the gas speed down low?

[andrew_mx83]

damn beaten to it lol

[MRMOPARMAN]

andrew - being a stock 4a, im fairly sure he found he didnt need anymore airflow than the chokes could provide, and it would have picked some airspeed down low which is sorely lacking on the bigport head.. ill just have to confirm with him the acutal sizes.

as for J fallen.. yes your right, but then again i could get my car rego'd with 4ac then chuck a big block chev in it when i get home.. doesnt make it legal. yes most of the time you get away with it.. but it only takes one cluey cop to send you to an emissions station for you to get F'd in the A.

in vic, and SA and QLD may be different... if you replace the head it has to come with the emissions gear too.

[dnegative]

Cops don't give two shits about old school cars especially ones that are not sporting fuckoff V8's and things with turbos hanging off the side

[jfallen]

mrmoparman was your mate running the chokes because of a class restrictions or in an attempt to pick up the gas speed down low?

Just for your information all carburetors have chokes in them. (Calm down keyboard warriors, FCR and other smooth bore carburetors work on black magic, well not quite but moving on.) The chokes (aka, the venturi) generates a localized low pressure (Bernoulli's principle) that "sucks" the fuel into the throat of the carburetor in the most general sense. 42mm chokes are actually quite large for a 1.6L. the factory 2T-G chokes are between 33 and 36mm from memory.

Keep in mind that a 32/36 DGV Weber has chokes of 26 and 27mm respectfully, and people have got 120BHP out of a single without too much bother. Formula ford (due to other restrictions) netted between 115-117BHP as a guide using this carburetor. Using this as a base line, it stands to reason that a twin down draft setup could potentially net 240-BHP. However this isn't quite the case for other reasons. Plus in practice the reason for doing such a thing escapes me. My point being that 42mm chocks on a twin 45 setups for a 1.6L aren't small

damn beaten to it lol

JA.