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Hi all I have an SD1 6 cylinder 2600 that I am currently looking at with a means to giving it a bit more power. My question is what would I need to supercharge it? Here is a pic of my 2300 but its the same engine type.  This may be a stupid question but I have never added a charger before and would like to know if its worth it or not. Thanks in advance |
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1984 Rover SD1 Vanden Plas 2600 Auto
1985 Rover SD1 2300s Auto
2005 MG ZT 1.8 Manual
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You can do it but it not as simple as that . You will have to make up all and sundry pipework and pulleys etc and find a new way of fuelling it .
And then you have to hope that the rest of the engine and transmission can take the strain.
Basically you can do it but you will have the good chance that it will knacker it , but its a chance you have to take . And should !
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Hi, The compressor takes a lot more power to drive it than a turbo so you have to overcome that before you get any gains. You will need to improve oil supply because top end of the 6 pot was marginal on those. I would suggest that if you have to ask you shouldn't do it. That is not to say don't do it but you need to do a lot more research. There are not many manufacturers that do it so that should tell you something. Sorry to be negative but I can see this swallowing up a lot of time, effort and money, are you prepared for that?
Colin
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Thanks for the replies. dave I have a spare engine so if it did detonate no big problem  And there's always plenty of V8 lumps about if I fancy a change colin At this point I am merely looking into it and will be researching it to death before I do it and that's if I do it. I will be doing the basic tuning bits as well such as port and polish the head and make a better exhaust including manifold. A mate of mine is looking into how I can adapt the inlet to take a better carb/carbs. Finding a better cam is probably the hardest part. |
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1984 Rover SD1 Vanden Plas 2600 Auto
1985 Rover SD1 2300s Auto
2005 MG ZT 1.8 Manual
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Stick a turbo on the side, modify the SU carbs to blow through and be done with it in my opinion. I've researched supercharging in the past, bought some stuff to do it, but compared to fitting a turbo it's insanely involved and causes more issues than turbocharging would.
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Stick a turbo on the side, modify the SU carbs to blow through and be done with it in my opinion. I've researched supercharging in the past, bought some stuff to do it, but compared to fitting a turbo it's insanely involved and causes more issues than turbocharging would. Just out of interest , can you convert the carb by just using the turbo seals ? Is it that easy ? |
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Stick a turbo on the side, modify the SU carbs to blow through and be done with it in my opinion. I've researched supercharging in the past, bought some stuff to do it, but compared to fitting a turbo it's insanely involved and causes more issues than turbocharging would. Just out of interest , can you convert the carb by just using the turbo seals ? Is it that easy ? I was running my old twincam 4 banger in my P6 on twin SU blow through with seals, needles, springs and floats from a turbo carb bought from Burlen fuel systems. Only difference that I know of to a genuine turbo SU was that they had O-rings fitted to seal the dashpots to the main body? I used a bit of sealant and they were fine upto 10psi, then started oozing oily residue! The fueling from the turbo needles wasn't too far off, not perfect but ok enough, just let down by having a high compression n/a engine underneath it all! |
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Stick a turbo on the side, modify the SU carbs to blow through and be done with it in my opinion. I've researched supercharging in the past, bought some stuff to do it, but compared to fitting a turbo it's insanely involved and causes more issues than turbocharging would. Sounds like a good idea, any more info very welcome Just seen the above post, you were faster than me |
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Last Edit: Apr 8, 2018 19:00:33 GMT by Spudgun
1984 Rover SD1 Vanden Plas 2600 Auto
1985 Rover SD1 2300s Auto
2005 MG ZT 1.8 Manual
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Stick a turbo on the side, modify the SU carbs to blow through and be done with it in my opinion. I've researched supercharging in the past, bought some stuff to do it, but compared to fitting a turbo it's insanely involved and causes more issues than turbocharging would. Sounds like a good idea, any more info very welcome Just seen the above post, you were faster than me You'll need to make or buy a plenum to stop the forced induction blowing all of the fuel back down the jet and out of the fuel bowl, and fit a high pressure fuel system with a boost referencing regulator to keep the fuel pressure 3-4psi above boost pressure, as used on Metro turbos. |
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Apr 14, 2018 18:07:11 GMT
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I'd go with turbo as well
Blow through on carbs is quite straight forward (I've had lots of experience with metros and montego)
As said you need a high pressure fuel system like on an injection
A fuel pressure regulator that's boost controlled (like metro turbo) so it has an in out and return with a pressure feed to compensate for boost
The trick with the carb is to equal the pressure on both sides IE you need the same pressure in the float bowl as going through the carb from the turbo
The fuel pressure reg will take care of the rest
If the fuel pressure is lower than the boost the fuel won't come out the main jet
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1992 240 Volvo T8
1955 Cadillac
1994 BMW E34 M5 (now sold )
1999 BMW E36 sport touring x2
1967 Hillman imp Californian "rally spec"
1971 VW bay window (work in progress)
1999 Mazda 323F
1987 Jaguar XJ12
All current
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