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Phill

Triumph ITB conversion

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With my EFI all but fitted and running, just waiting for the tuner to be available to finish it off, I have started preparing the throttle bodies. 

I had the injectors tested and cleaned but one was found to be duff. So I had to buy another throttle body to get some more injectors. Hey ho, at least I have spares now as all three are fine :)

Some inlet manifold gasket bought and cut to shape.

IMG_20180301_090053164.thumb.jpg.1cef38d06a56358fd41b6848e282f957.jpg

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Linkages.

I found a company called closedcoursemotorsports in the USofGuns who do a bespoke linkage kit for the Triumph ITBs but at $225 plus shipping and tax I thought I would make my own. I have shamelessly copied their part for attaching to the throttle body.

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The black parts replace the original part above and attach as below.

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Rails stripped and painted. The lower rail has to be cut to allow the swing of the new part.

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All put together.

IMG_20180313_140104256.thumb.jpg.d20e25932f1398f44f906121ff62593f.jpg

Nothing fully tightened yet as more than likely something will have to change as is the way with these things.

Next to make a board to mount it all to so I can start roughing out the rest of the linkage. Thanks to Mike and Phil for the measurements.

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Looking tidy Mr Phill.

Listen, if you are gonna do kitchen counter photo-shots you need to get a half eaten sandwich in the background + maybe a beer. It just doesn't look right unless you do this.

 

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Always impressed by those that can drill square or rectangular holes :ani_clapping:

Peter

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12 hours ago, R2D2 said:

Listen, if you are gonna do kitchen counter photo-shots you need to get a half eaten sandwich in the background + maybe a beer. It just doesn't look right unless you do this.

 

Or a doner Kebab.............................................

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Thanks All :)

Half eaten sandwich, noted, kebab might be a stretch:lol:

Nero Impala granite:smartass: No idea what that means. Mainly black with a slight silver fleck and has a subtle goldy brown tinge to it but by no means footballers wives;)

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Good news! My replacement injectors are all good:)

Injector rails and injectors back on. I flipped the inlet on the right bank which meant putting the rail on backwards. All it means is that the injectors don't locate on a tab at the top but they are secure. Will make the plumbing a bit tidier.

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Board made for working out placement of linkages. Didn't have a half eaten sandwich so there is a loaf of bread......;)

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Edited by Phill

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Nice work Phil. coming along, when are you hoping to do the install ?? Hope the loaf is there ready for the bacon butties !!

Mike

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Started on the cross bracket that will supportt the linkages. Can't do the final mounting holes until fitted on the car to be sure. It will sit under the manifold flange.

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Ends need to be angled too to match the angle of the flange (unless I make some wedges, we will see).

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Assume you have looked at the Weber linkages Phil? I was told they were a good option with some simple work, but wasn’t told about the need for a mounting bracket?

Ian

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I'm doing something similar to this. The pivot needs to sit on something, in the below case the breather housing.

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However, I don't like the offset between the linkages so my bracket makes the pivot central to the actuators. I will also make the pivot larger so there will be even less offset. That's the plan anyway :)

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I hadn't seen that! It's exactly what I'm doing but just with different brackets. Good info there though, thanks :signs85:

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I decided that fitting the cross bracket after the ITBs were in place, getting the bends and holes right on each end right, would be pretty much impossible. So I made seating brackets which the main bracket will sit on.

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16 hours ago, Phill said:

I'm doing something similar to this. The pivot needs to sit on something, in the below case the breather housing.

156760C9-DDBE-4EC2-8F79-34721ED9D0D0_zps7ttdqwwc.jpg.3ac87f9b06e792740d2e3029a07935ac.jpg

However, I don't like the offset between the linkages so my bracket makes the pivot central to the actuators. I will also make the pivot larger so there will be even less offset. That's the plan anyway :)

ITBs are a great looking setup aren't they.  I really admire you going for it. 

With a bit more time, I'd like to do something similar myself. Maybe one day. 

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12 minutes ago, Northy said:

ITBs are a great looking setup aren't they.  I really admire you going for it. 

With a bit more time, I'd like to do something similar myself. Maybe one day. 

They are aren't they and thank you.

If you gather all the parts beforehand and have ready access to a tuner I think it's possible to complete in two uninterrupted weeks, for a competent DIYer. Less if you are a whizz with the tuning software.

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Phil you have clearly been thinking about this way more than me but a couple of thoughts based on the recent pics you have posted.

1. Might your flat cross bracket be affected by some vibration / resonance at some RPM's which may affect the stability of the linkages?
2. Has anyone ever just made a small slot in the shroud and fabricated a centre island support bolted to the top of the case instead of the breather which could be perfectly placed and sturdily mounted?

Enjoying the updates - please keep them coming.

 

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1 hour ago, jevvy said:

1. Might your flat cross bracket be affected by some vibration / resonance at some RPM's which may affect the stability of the linkages?

2. Has anyone ever just made a small slot in the shroud and fabricated a centre island support bolted to the top of the case instead of the breather which could be perfectly placed and sturdily mounted?

Vibration? A good point, well made and one that hadn't occurred to me <_< You are right, could be an issue. I suppose we won't know until it's on and running. If there is an issue then rubber "dampers" between the bracket and the shroud might help.

Hole in the shroud? Like this idea a lot :ani_clapping: Not seen it done but when I take the shroud off and there seems to be a likely solution then my plans may well change - more tinkering - yay :D

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Rather than rubber bobbins, I would look at bracing - maybe angle iron (in ali) on the underneath across one diagonal.

But as you suggest, wait and see if there is a problem before looking for a solution

Peter

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Although I now won't be fitting this kit until the autumn it doesn't stop me tinkering to get it as ready as possible :D

SheWee trumpets (thanks Jev :P) prepped and painted. Did a quick measure and they won't fit like this, with eventual filters.

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So will do it like this....

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Edited by Phill

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Beginnings of an air filter. I'm going for the classic pancake style.

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