hmmmm wonder if dad would do that to his nice and shine 2001 range rover p38Henry wrote:Like the thinking scott, but would it not be cheaper, easier, and more reliable to fit EFI, and chip it a few inches from explosion?
Dual/Twin SUs
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turbo-tom
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Re: Dual/Twin SUs
Tom 
Ford Fiesta ST
Ford Fiesta ST
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dan_2k_uk
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Re: Dual/Twin SUs
Seeing this posted elsewhere reminded me of this thread.
Did anything ever come of it?
Having now seen just how restrictive a standard manifold is this could probably produce some very good results once set up properly.
Dan
Did anything ever come of it?
Having now seen just how restrictive a standard manifold is this could probably produce some very good results once set up properly.
Dan
Janspeed manifold, LWB Vit vented discs and calipers
Build thread -- Build photos -- HLA-Artwork
Coming soon: YJs, Trussed axles, Full float rear.
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TanZuk
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Re: Dual/Twin SUs
Was looking around the forum and came across this thread.
Scott and I were talking about this possibly being done to help out with something a bit different for the UK members looking for another Carb alternative.
I did the cut downs on the 1.3 manifold (inlet) that is posted. Yes, you would be using the water jackets that are left just need to be modified and Tig welded.
After cutting the 1.3 Manifold (inlet) decided that the use of the 1.6 inlet would be a better choice to use. This is because of the better flow with the larger runners. The 1.3 inlet seems to be very restrictive and is one of the major causes of the motor not making much power.
There was also an issue with clearance with the brake booster and battery because the UK has right hand drive. This still maybe able to get done with some elbow tubes that make the carbs face towards the front side of the vehicle. The 2nd tricky thing would be the linkage.
Scott mentioned that the SU’s are tough to get in the US and are very expensive if you happen to find some. They are also in very poor shape. These couple of issues plus the clearance issues slowed this idea down for me to finish. I have a bike 4 carb set up already and decided to go with a dual CV bike carb setup for another motor. This would be more cost effective for me and the carbs are much easier to get as well.
Scott or I also don’t Tig weld so that was a bit of an added cost to get this done. I have the machined down inlet that is pictured. I have offered it to Scott for free if he wanted to try and finish it just needs to pay for the shipping. Scott has a lot on his plate with all the projects so we haven’t done the exchange yet.
Scott if you no longer want to give it a go maybe one of your member? could finish where we left off. I know that you had some ideas on how to overcome the clearance issues from the right hand drive obstacles. I’ve got a couple as well. Maybe this could be done if someone else wants to take on the challenge.
Terry
Scott and I were talking about this possibly being done to help out with something a bit different for the UK members looking for another Carb alternative.
I did the cut downs on the 1.3 manifold (inlet) that is posted. Yes, you would be using the water jackets that are left just need to be modified and Tig welded.
After cutting the 1.3 Manifold (inlet) decided that the use of the 1.6 inlet would be a better choice to use. This is because of the better flow with the larger runners. The 1.3 inlet seems to be very restrictive and is one of the major causes of the motor not making much power.
There was also an issue with clearance with the brake booster and battery because the UK has right hand drive. This still maybe able to get done with some elbow tubes that make the carbs face towards the front side of the vehicle. The 2nd tricky thing would be the linkage.
Scott mentioned that the SU’s are tough to get in the US and are very expensive if you happen to find some. They are also in very poor shape. These couple of issues plus the clearance issues slowed this idea down for me to finish. I have a bike 4 carb set up already and decided to go with a dual CV bike carb setup for another motor. This would be more cost effective for me and the carbs are much easier to get as well.
Scott or I also don’t Tig weld so that was a bit of an added cost to get this done. I have the machined down inlet that is pictured. I have offered it to Scott for free if he wanted to try and finish it just needs to pay for the shipping. Scott has a lot on his plate with all the projects so we haven’t done the exchange yet.
Scott if you no longer want to give it a go maybe one of your member? could finish where we left off. I know that you had some ideas on how to overcome the clearance issues from the right hand drive obstacles. I’ve got a couple as well. Maybe this could be done if someone else wants to take on the challenge.
Terry
Re: Dual/Twin SUs
Hey, guys, I know this thread has been dead for almost 5 years but I managed to get hold of a set of SU H4's out of an MG D now I'm doing the SU conversion for sure with a single carb though, but it got me thinking. What if I went twin carb like they originally were? 
Now I've got a 1L Sj410 would it be feasible? or would there be little to no power increase from just the single carb?
and if it were to be done, would it make more sense to modify the manifold or custom design one, tube welded or go all out and cast me a new aluminium manifold altogether?
Did anyone ever end up taking over Tanzuks's project? wanna see the outcome
Now I've got a 1L Sj410 would it be feasible? or would there be little to no power increase from just the single carb? and if it were to be done, would it make more sense to modify the manifold or custom design one, tube welded or go all out and cast me a new aluminium manifold altogether?
Did anyone ever end up taking over Tanzuks's project? wanna see the outcome