spegru
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| posted on 26/11/24 at 12:48 PM |
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Thanks for that offer and for all the advice
Philip, regarding posting pictures, at the top of this page you will see a tab marked Photo Archive. If you go in there you can upload your photos
and once you have don that you can click on the uploaded photo and the system will supply a link that can be copied pasted into the forums.
You can have either a full size pic or an expandable one depending on the option chosen
Very clunky but it works
Anyway I have done that and I also found the ST200 manifold that I was getting confused by
Here are the two manifolds
ST220
 
ST220 manifold
ST200
 
ST200 manifold
Unfortunately though mine is a different shape to either of these
Early AJ30 manifold
 
AJ30 manifold
The bulk of it is on the RH side of the engine vs LH for ST220 or both sides for the ST200. this means that I am going to have problems with all my
coolant plumbing
Meanwhile this morning I have been experimenting with the MEITE setup for the ME360 choosing various options but so far none has made any real
difference beyond the basic only running for a few seconds problem (after which it will restart and begin that same cycle again)
I am again suspecting my fuel delivery purely because of my very waggly fuel pressure guage . It doesnt do that when the guage is connected next to
the tank, only when connected next to the engine
See this vid (but ignore the part regarding the hiss from the manifold as that's now gone)
https://youtube.com/shorts/UO7k2sFVT8Y?si=rwEH4oUaC0Njyfu9
IIt may be that the pressure guage is just very poorly damped and is resonating in response to the injectors, but it does seem very odd. I did test
the flow rate by disconnecting the fuel line into a coffee jar. It filled the 2 litre jar in about 20seconds.....
Check out Invader Garage on Youtube
https://www.youtube.com/channel/UC3C55qk-tbKc0WjmxGqFoXg
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spegru
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| posted on 26/11/24 at 02:38 PM |
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While I am at it here is the manifold from an XF 3 litre, which has pretty much the same engine (although I know its got differences around the
timing chain)
This also has its bulk to the right although there does seem to be more at the front than the original S Type AJ30
 
XF manifold
Check out Invader Garage on Youtube
https://www.youtube.com/channel/UC3C55qk-tbKc0WjmxGqFoXg
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spegru
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| posted on 26/11/24 at 05:14 PM |
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latest video of my attempts here
https://youtu.be/2-I2feo-lw4
Check out Invader Garage on Youtube
https://www.youtube.com/channel/UC3C55qk-tbKc0WjmxGqFoXg
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mgb281
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| posted on 26/11/24 at 05:22 PM |
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I spent this morning looking at my Jaguar engines (I have two of them and yes I know it's greedy) which was spurred by Steve's problems,
for those that don't know I am now getting closer to doing the paintwork, the engine has been in and out multiple times and three different
engine mounts have been fabricated. I initially thought that the ST200 manifold would work but it ended up too close to the bulkhead, heater and
nearside bonnet hinge so I had a rethink and after buying an X type one I decided to carve up a ST220 inlet manifold. As you can see I sliced of the
inlet tract up to the plenum and removed the raised section for both access and bonnet clearance, the closed end was cut open and a 25mm block of
aluminium was welded in after drilling a 65mm hole in the centre. I used a burr cutter to blend the aluminium block into the interior of the
plenum.
 
Modified ST220 inlet manifold
 
Modified ST220 manifold
 
Inlet manifold shelf
You can see that there is a shelf that runs the length of the plenum, the offside bank of cylinders is fed by the lower section and the nearside bank
by the upper section. The throttle butterfly works with one side of the flap feeding the upper shelf and the other side the lower. the shelf has been
shortened next to the throttle body by about 15mm to aid air flow. I will try and polish the upper surface of the shelf to improve airflow.
I had a good look at the engine with the S type manifold still and that open pipe feeds a small 3mm flexible hose about a metre long but I have no
idea where it went to. The rubber elbow on the PCV was good on both engines, however I think it would be easy to fabricate a rigid steel or copper one
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spegru
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| posted on 26/11/24 at 07:25 PM |
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that all looks very impressive fab work. I'm trying to avoid very much of that although I did have to get an adaptor made for the Throttle
body.
I suppose the pipe you are referring to was my mystery hissing pipe near the lower IMT valve? It's now blocked off. There was a small tube in
that area that's no longer there. It went to the electronic fuel pressure sensor. Not sure why that was there but even my fuel pressure guage has
a release tube and valve for when you disconnect or reset, so I imagine could be something like that. But I'm not using that as Ive got a
mechanical pressure regulator with a vent tube back to the tank.
Ive also got that tube to the crank case that I hear gets cracked. Mine seems to be in good condition but as of now it's not connected to
anything else anyway.
[Edited on 26/11/24 by spegru]
Check out Invader Garage on Youtube
https://www.youtube.com/channel/UC3C55qk-tbKc0WjmxGqFoXg
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spegru
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| posted on 29/11/24 at 06:52 PM |
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A bit of an update: It RUNS!
After fiddling around for ages worrying about fuel pressure, air bubbles in the fuel, fuel contamination I came across this page on the ME website
https://motorsport-electronics.co.uk/onlinehelp/html/4353.html
This led me to using the warmup table to enrich everything.
I know this is wrong but It WORKS!
Enough at least for me to be able to move on and cease worrying about fundamental issues
So in summary it seems the mixture was far too lean
Quite why that is and why MEITE did not tell me so, I do not know. A problem for another day week or even month
What a relief
Another vid is going up about this tonight
Check out Invader Garage on Youtube
https://www.youtube.com/channel/UC3C55qk-tbKc0WjmxGqFoXg
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