Rightyho chaps - I throw myself before the forum again.

I have a V6 cologne with the bosch K-tronic (or what ever it is) injection. I am going to use it in my locost whatever you lot say so diferent engine options are not answers I am looking for.

I hadn't studied it closely before 'cos although knowing it is a bit on the tall side, other people are fitting them so It can be done.

However on closer investigation it is going to need the mother of all bonnet bulges as it stands so:

1) what are you other V6 chaps doing?
2) Would a carb reduce the height and how would it affect performance.
3) the risers from the manifold to the plenum are very long - I know that riser length probably matters, as does plenum volume, but as it has crappy siameased ports anyway is it as important - My plan might be to shorten the risers (build up weld and open them up at the same time) and make a new plenum chamber that sits lower between the rocker covers with the throttle body moved to the front of the engine - is this a crap idea?
4) why does the plenum slope to the front of the engine?
5)Any other sugestions - I repeat I am using this engine whatever you say!

yours in anticipation of a good argument or two,

Phil.

dUNNO ABOUT THE REST, BUT THE SLOPE OF THE PLENUM IS POSSIBLY DOWN TO THE FACT MOST RWD ENGINES ARE SLOPING FRONT TO BACK TO SEND THE DRIVE IN THE RIGHT DIRECTION AS FAR AS i KNOW....

fRIGGIN' cAPS lOCK.

You're right about the plenum - checked in the our sierra.

Been investigating the other stuff as well:

Apparently messing with the risers will, as suspected, jive with my torque curve. Although I'm still not sure how critical this is as the slope on the plenum means that they are diferent lengths anyway.

A carb with a pancake filter will be much lower and also the protusion will be over a much smaller area. Using a carb will also get rid of a lut of under-bonnet gubbins. On the downside BHP would drop to just over that of an EFi Pinto at a smidge over 130 and torque would drop to about 145.

Other thoughts still much appreciated.

Cheers

Phil

If i was to use a cologne i would try to find a pair of heads off of a 2.8 mustang (non siamese) and go with a low rise offenhouser manifold and a holley, the manifold and carb will work with the standard heads though the mustang heads will give you a jump in power, but if you have the money to spend you can get 285bhp out of the 2.8 with the siamese heads and K-Jetronik injection...
but that is silly money.
Best of luck with your choice ( i like the 2.8i)..

The guy at http://www.wurlyvalve.i12.com/ is using a 2.8 and has fitted a slightly lower 2.9 plenum (and 2.9 EFI, I think, and a load of other tuning bits). He also has a mother of a bonnet bulge too!

Liam

[Edited on 12/2/03 by Liam]

Just another quick Q on this subject:

I obviously need a wiring diagram and a 'plumbing' diagram to put the damn thing back together again if I am to use the injection (which I probably am). I am going to pick up a sierra V6 Haynes manual from ebay - Is this detailed enough opr is there a better source of information?

Phil.

quote:

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Originally posted by philgregson
Just another quick Q on this subject:

I obviously need a wiring diagram and a 'plumbing' diagram to put the damn thing back together again if I am to use the injection (which I probably am). I am going to pick up a sierra V6 Haynes manual from ebay - Is this detailed enough opr is there a better source of information?

Phil.

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When I was looking for upgrades for my jag v12, there was a company that made intake mods to tune the plegnum tracts that gave summat like 13% more torque. Shortening them will have some kinda effect.

the piccy below is of my V6 cologne 2.4 - smaller brother of the 2.9 that does not have siamesed outlets. I dont know if it will fit your head, or be of any use, but its flat and had the air intakes at the front not the back.


for what its worth.......

Rescued attachment p1.jpg

why is all your wiring yellow?

It is spaghetti, the result of an al fresco dining accident

when you stripped from the donor you will find that the efi loom comes away from the main loom. there is a connector with a few wires to it that go to things like power, the fuel pump stuff, ign coil, etc. its not too bad to work out.


The Bosch K-Jetronik system is not electronic it is a manuel system, so if the 2.4 is efi then its not K-Jetronik and phil did say he was using this system, i assume from he capri..

Most definately K-Jetronic.

It's from an XR4i or XR4x4 I think. It was not removed by me unfortunately and the previous owner carfully marked all the relavent bits of the loom with labels written on masking tape - all of which have since faded to incoherence.

I decided that as long as I have the correct plugs and sockets for the electronic ignition I would probably make a new loom as there is not a lot to the engine side - hence the need for a wiring diagram.

To be honest it's all thge plumbing that worries me more although all the bits are there (I think) they are not all conected.

As regards the risers to the plenum - they can't all be at the optimuim length as they vary with the slope of the plenum but I don't know which is optimum so I'll probably leave be. I have read however that power gains of upto 15% can be had by opening them out as in current form they are a major restriction to airflow. This does however reqire building up the outside with weld first - If I can find some info on what profiles or shape these are done to I might give this a go.

Comming back to the height issue I've decided that I'm just going to install it as compactly as I can and put in a bulge to deal with what is left sticking out. I'm probably going to drop the engine half an inch to 1.5 inches below the bottom rail and may raise the scuttle an inch as well just to try and reduce the impact of any bulge.

Any further thoughts on the V6 and it's instalation still appreciated though beacuse I would like to get it right.

Cheers for info so far,

Phil.

Phil.

I raised the bonnet line by nearly 2 inches to help reduce the efect of the buldge. Only way to lower it is using the 2.9 plenum but I don't think is brings it down by much.

quote:

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Originally posted by theconrodkid
why is all your wiring yellow?

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quote:

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The Bosch K-Jetronik system is not electronic it is a manuel system, so if the 2.4 is efi then its not K-Jetronik and phil did say he was using this system, i assume from he capri..

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