Performance parts for a ford Essex V6

[Mr Revhead]

haha maybe we're talking about different things....

im sure the scorpio had a 24v quad cam cologne based V6

i wasnt aware of any production quad cam essex version

[J2Racing]

they had to build some DOHC motors for road cars or they could race them in production cars. As far as I know they built about 500.

As I understand it they ran a special run of essex blocks that where strong enough to be over board to 3.5 not sure what the road going RS3.1 used but the race cars used these special blocks. I think they ran about 100. I know they tried to bore a 100 to 3.5 and only 2 survived I'm guessing the rest ended up being Vtwins

[Mr Revhead]

ok, as far as the 3100 goes they were all overbored essex engines, still single cam.

the rules stated the base production car had to have an engine over a certain cc rating to allow it to run in the larger capicity class.

so they over bored them to take them to 3100cc. and yeah not all blocks survived the boring! i believe the number made was 200

the modifications under the class rules then allowed them to use extra cams and CCs.

they later used that enigne in f5000 getting like 500hp

[nismo.capri]

ok, as far as the 3100 goes they were all overbored essex engines, still single cam.

Not the Cosworth GAA that was in the RS3100. It was an Essex bottom end with DOHC Cossie heads.....or are you talking just the road RS3100's?

They were all single cam

This is a damn interesting read http://homepage.mac.com/frank_de_jong/P ... Capri.html

[J2Racing]

I stand corrected on that one. According to "essential Ford capri" 1000 where meant to be bulit for homologation but only 248 bulit officaly. Funny thing is they use a weber 38 . I think this is the standard V6 carb could be wrong.

I have a spare block or two may have to over bore.

[J2Racing]

Yipe sorry I thought the RS3.1 road car had the Quad cam engine. Funnly enough they reckon there could still be a kit in india of all places.

[J2Racing]

It has been suggested to me to go dual carb with 2 34/36 weber. Anyideas on this. The plan is to mill the top out of the inlet manifold , and get a new top laser cut that will take the two carbs.

Can the second throat on the carbs be reset to open earlier. I had a MKII capri 2L and the second throat didn't open till 5000RPM. Bit late for this motor.

[Mr Revhead]

so i assume its vaccum secondaries?

been a while since i played with webers

[J2Racing]

mechanical I think a while for me on these to, Just a dirty old cortina carb. We just thought of how we could use the cheapest possible carb. These sound quite practical too. Last one I bought cost me a dozen been icncluding inlet manifold.

[Mr Revhead]

if mechanical then yeah you could fiddle with the links to make it open earlier

will take a bit of fiddling round though.

they wouldnt open at 5000rpm, theyd open at a set throttle percentage

[J2Racing]

Sorry the throttle percentage equaled about 5000RPM.

Any idea if it would work or not.

Getting the top plate tip welded in is not a worry. My best mate is one of the best tig welderes in the country.

[Mr Revhead]

well.

i reckon it can be done

just a lot of pissing round modifying the linkages to have the secondaries open when you want.

resizing jets shouldnt be any harder than on anything else.

the only other thing is will the stock manifold runners suit?

[J2Racing]

Not to stressed about linkages redline do a heap of uni linkage kits . What are manifold runners?????

[mk5corty]

are you member of cortinaforums.com, think it used to be kenet. or something? I keep a watch on it, dude called JRW has an essex turbo on triple webbers.

heres the link for you

http://cortinaforums.com/forum/index.php?topic=11344.0

[Mr Revhead]

runners = the passages in the manifold to the inlet ports

[J2Racing]

runners = the passages in the manifold to the inlet ports

Do you mean wiil they be big enough?

Sorry I have not dealt with this sort of thing before.

[Mr Revhead]

i mean will they match up to where the carbs will fit?

id be inclined to think not really.

why dont you see if you can get ya mate to make a new manifold?

maybe one with individual runners to a plenum, with the carbs mounted on top.

what other mods are being done?

[J2Racing]

seriously looking at a over bore to 3.1 new cam bigger valves port the heads all the stuff that makes old pomy cars go much better.

[Mr Revhead]

cool, id look at making up a manifold.

i think you may need to consult some one local whos done this sort of thing before. as you ned to take into consideration cam, port profile, rev range, compression ratio etc

basicly you need a plan of what to do. while you can learn a lot from the web, having some one whos done it before, even on a different engine, will be a huge help.

[nismo.capri]

cool, id look at making up a manifold.

Couldn't agree more

i think you may need to consult some one local whos done this sort of thing before. as you ned to take into consideration cam, port profile, rev range, compression ratio etc

I'd be going for a carb throat per runner (ie 3, 2 barrel carbs), as close to equal length as possible runners (short for HP) with changable trumpets so that you can tune it a bit with trumpet length.