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What about using a 4.5 Djet intake manifold to megasquirt a 5.0 Kjet ?
Hi all,
Once I finish rebuilding the timing on my 5.0 M117 I will look into megasquiting it.
This 5.0 engine will then be fitted in a W111 Coupe currently equipped with a 3.5 Djetronic engine. The other day I got hold of a complete M117 4.5 Djetronic intake manifold. I did not take the Kjetronic intake manifold out of the 5.0 yet, but at first sight the bolt pattern is the same.
My idea is to use this 4.5 Djet manifold and use all the Djet set up already in place in the car: injectors, rails, pressure valve, temp and air sensors, fuel pump etc. That will save me quite some time and money. I looked at the specificities of the various components and apart from the ATS all seems to be within range of the Megasquirt system for the 265 to 275 hp I expect to get out of that engine with both fuel and ignition convertion.
I like that Djet manifold because it was designed as an EFI manifold in the first place. Apart from the different routing, the ports seem to have the same shape and length. Their internal diameter is 39.5 mm or so. I will compare this with the one of the 5.0, but if someone has a 5.0 Kjet manifold on the shelf, could he please measure the id of the ports and tell me?
The other concern I have is the id of the throttle body: 67mm at the flap, which according to the megasquirt webpage is good for 260 hp only. Could someone tell me what is the id on the 5.0 Kjet?
More globally, what’s the opinion of the experts on this board about using a 4.5 Djet manifold and most other Djet components?
Thanks!!
Last edited by GGR; 08-24-2009 at 06:02 PM.
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08-24-2009, 05:42 PM
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