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Author: Subject: Jag V6 dyno results (at last)
Partofthechaos

posted on 11/6/19 at 09:56 PM Reply With Quote
How do you sort the oval jag lower manifold ports and the round st200 upper?
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CosKev3

posted on 12/6/19 at 05:05 AM Reply With Quote
quote:
Originally posted by Partofthechaos
How do you sort the oval jag lower manifold ports and the round st200 upper?


I've port matched them the best I could with a die grinder.

The ST200 twin round ports are bigger than the oval ST220/AJ30 ports,so I've ground out the alloy adapter plate I made out of the ST220 lower manifold to match the ST200 upper inlet.
Also took some material out of the ST200 upper between the round ports to make it into virtually one port.

If anyone wants pics U2U your email address and I'll happily send some,I cant be arsed re-sizing pics to add them to this old out of date forum!

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40inches

posted on 12/6/19 at 10:26 AM Reply With Quote
quote:
Originally posted by RWD Focus
Ive got a couple of st200 manifolds but mine needs the throttle body at the front as the rear is too close to my bulkhead in my focus, i did consider chopping one up and moving throttle body to other end.

Just turn the manifold round? you have to make a spacer anyway.

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RWD Focus

posted on 12/6/19 at 10:32 AM Reply With Quote
Are they reversible? Would the majority of the bolts line up ?






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40inches

posted on 12/6/19 at 10:47 AM Reply With Quote
quote:
Originally posted by RWD Focus
Are they reversible? Would the majority of the bolts line up ?

The outlets are mirror images, so should be reversible. Non of the bolt hoes line up, hence the need for a adaptor/spacer.

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RWD Focus

posted on 12/6/19 at 10:55 AM Reply With Quote
Just offered it up reversed but it catches on oil filler. In order to get it to clear it would be too high and catch on my wiper motor and linkage. Looks like Iím stuck with the one I made using jag inlet.
Thank you for your help and advice






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40inches

posted on 12/6/19 at 11:03 AM Reply With Quote
Inlet adaptor the CosKev3 way

Hope you don't mind me putting up your photos Kev?
This is how Kev did it, in my opinion the best way. It's much lower than mine, but needs a small amount of welding, i did mine
without resorting to machining or welding, but would do it Kevs way in hindsight
Description
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Description
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[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]

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40inches

posted on 12/6/19 at 11:15 AM Reply With Quote
quote:
Originally posted by RWD Focus
Just offered it up reversed but it catches on oil filler. In order to get it to clear it would be too high and catch on my wiper motor and linkage. Looks like Iím stuck with the one I made using jag inlet.
Thank you for your help and advice

Can you cut away the idle control castings and weld on a blanking plate? Worth a try, you don't have anything to lose
I run mine without the idle valve, starts fine with a little throttle.

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RWD Focus

posted on 12/6/19 at 11:16 AM Reply With Quote
Worth a look yes. Thanks






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sdh2903

posted on 13/6/19 at 11:23 AM Reply With Quote
Have sent you a u2u RWDfocus regarding the inlet.
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CosKev3

posted on 13/6/19 at 01:52 PM Reply With Quote
quote:
Originally posted by 40inches
Hope you don't mind me putting up your photos Kev?
This is how Kev did it, in my opinion the best way. It's much lower than mine, but needs a small amount of welding, i did mine
without resorting to machining or welding, but would do it Kevs way in hindsight
Description
Description
Description
Description
Description
Description

Description
Description
Description
Description


[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]

[Edited on 12-6-19 by 40inches]


No probs

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big_wasa

posted on 13/6/19 at 02:21 PM Reply With Quote
The reason for not using the full lower St220 on the Aj is it because the bolts donít line up or the injectors are in a slightly different place ?

Edit st220 not st200

[Edited on 13/6/19 by big_wasa]

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CosKev3

posted on 13/6/19 at 02:57 PM Reply With Quote
quote:
Originally posted by big_wasa
The reason for not using the full lower St on the Aj is it because the bolts donít line up or the injectors are in a slightly different place ?


ST200 wouldn't fit into the V between heads,and ST220 lower the injectors are on a different angle,so dont point into port correctly,you could perhaps make it work by reshaping the inlet ports on the head,but obvs that's a head off job.

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40inches

posted on 13/6/19 at 03:04 PM Reply With Quote
quote:
Originally posted by big_wasa
The reason for not using the full lower St on the Aj is it because the bolts donít line up or the injectors are in a slightly different place ?


The lower manifolds are different between the ST200 and ST220/AJ30, I think in both ways
Must learn to type quicker

[Edited on 13-6-19 by 40inches]

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big_wasa

posted on 13/6/19 at 03:21 PM Reply With Quote
Mines an ST220.

Would be nice if it stopped bloody raining so I could drag it out. I need to sort some engine mounts.

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40inches

posted on 13/6/19 at 03:21 PM Reply With Quote
Inlet manifolds

Just dug up my research on the AJ30 from 6 years ago
I found one fitted to a Robin Hood that had the standard Jag exhaust manifolds
and a ST220 inlet and Emerald ECU. It made less than the standard power, about 220bhp I think.
Another was fitted in a Westfield, this is the spec from his website:

"Jenvey inlet manifolds and 45mm throttle bodies
Simpson race exhausts stainless 3 2 1 merge collectors
Raceco 7 1/4" titanium re-packable silencers"

That must have been eye wateringly expensive for:
Maximum bhp: 270bhp @ 7050rpm
Maximum torque: 222lbft @ 5322rpm

I think we accidentally hit on the perfect combination with the ST200

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big_wasa

posted on 13/6/19 at 04:10 PM Reply With Quote
I canít get my head around that.

In the back of my mind I recall all the st200 / st24 owners wanting the American Svt manifold.

Is there a difference between st200 and the vanilla 2.5 Mondeo/ Cougar inlet ?

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big_wasa

posted on 13/6/19 at 04:14 PM Reply With Quote
Funny enough the Rocketeer on carbon plenums with exhausts didnít make the numbers either.
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CosKev3

posted on 13/6/19 at 04:52 PM Reply With Quote
quote:
Originally posted by big_wasa
Funny enough the Rocketeer on carbon plenums with exhausts didnít make the numbers either.


I've seen a post on Facebook by them with over 280bhp from one,running 750cc injectors without the VVT wired up

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40inches

posted on 13/6/19 at 05:13 PM Reply With Quote
quote:
Originally posted by CosKev3
quote:
Originally posted by big_wasa
Funny enough the Rocketeer on carbon plenums with exhausts didnít make the numbers either.


I've seen a post on Facebook by them with over 280bhp from one,running 750cc injectors without the VVT wired up

Nearly as good as yours Kev

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big_wasa

posted on 13/6/19 at 05:25 PM Reply With Quote
I was going on this one.

233 @ the crank


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Partofthechaos

posted on 13/6/19 at 05:43 PM Reply With Quote
quote:
Originally posted by big_wasa
Is there a difference between st200 and the vanilla 2.5 Mondeo/ Cougar inlet ?


I hope not, I've just bought a standard one after spending a while looking at photos and concluding there was no visible difference.

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big_wasa

posted on 13/6/19 at 05:54 PM Reply With Quote
Another v6 Indy.
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sdh2903

posted on 13/6/19 at 06:03 PM Reply With Quote
The st200 inlet is different (I'm assuming bigger bore) as it used to be the upgrade of choice along with the throttle body on the st24.
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40inches

posted on 13/6/19 at 06:06 PM Reply With Quote
quote:
Originally posted by Partofthechaos
quote:
Originally posted by big_wasa
Is there a difference between st200 and the vanilla 2.5 Mondeo/ Cougar inlet ?


I hope not, I've just bought a standard one after spending a while looking at photos and concluding there was no visible difference.


The ST200 has the throttle valves in the lower manifold, and I think has the same throttle body opening as the ST220 (the ST220 throttle body fits straight on the ST200 manifold)
The runner bore is slightly larger as well, but the casting is the same, so easy to open them up with a burr grinder. You have to do that to match with the AJ30 lower anyway.

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