Lord Charper Posted March 9, 2015 Report Share Posted March 9, 2015 Hi Guys, After almost a year, I finally have my brakes and suspension where I want it. Now it's time for more power! I am contemplating purchasing an SC14 supercharger unit for my 2TC. I have seen a couple pictures of other people doing this but have not been able to find a proper write up. Do you all have any advice and direction to lend me before I embark on this? I am new to superchargers and could use all the help I can get! Thank you all! Chase H Quote Link to comment Share on other sites More sharing options...
ke70dave Posted March 9, 2015 Report Share Posted March 9, 2015 You thinking staying carby or converting to efi? Quote Link to comment Share on other sites More sharing options...
Lord Charper Posted March 9, 2015 Author Report Share Posted March 9, 2015 I recently picked up a set of side draft Mikunis and a 2TC manifold on the cheap. I would love to stay with carbs. Will that be problematic? Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted March 9, 2015 Report Share Posted March 9, 2015 (edited) You wanna do a suck through set up with carbs. I don't think the carb seals would handle the boost well if they're after the SC. EFI would be a better option. Edited March 9, 2015 by B.L.Z.BUB Quote Link to comment Share on other sites More sharing options...
Aussie_KE70 Posted March 10, 2015 Report Share Posted March 10, 2015 Also if you do a draw through set up then fuel is passing through a supercharger, the seals will need changing to be fuel resistant. Otherwise the fuel will eat the seals away in no time at all. Further more any seals/silicon in the "cold/intake side" will need to be fuel resistant. Unless you go for an EFI or blow through setup. I'm not sure if the carbs you have can/ could handle it or if there is enough knowledge on setting the carbs up correctly. Quote Link to comment Share on other sites More sharing options...
Mechanical Sympathy Posted March 10, 2015 Report Share Posted March 10, 2015 (edited) An SC14's seals are fuel resistant. I've considered this, by eyeballing it for a 2TG. I think the main reason why bolting an SC14 to a 2T isn't common is that the SC14 is quite long and would foul on TA/TE engine mounts when adapted to mount on a 2T A/C bracket. However when a 2T is mounted in a KE using modified block mounts, the mounts are effectively 30mm further back, liberating enough space for the SC14 to nestle in there. Food for thought. Anyway - forget the idea of blowing through two sidedraft carbs. I expect it would be hard to tune. You'd be looking either draw through a single 32/36 Weber (but then you need to consider how you'll bypass fuel-rich air around the supercharger at idle - or just let the S/C spin in a vacuum at idle which apparently makes it get hot) or, blow through a single 32/36 with a rising rate fuel regulator to push up the fuel pressure to match against the boost. I mention the 32/36 because anecdotally they seem to be able to handle boost without needing to be in a sealed container or blowing out seals, can be purchased new (to mitigate potential problems) and you can get a nice turbo hat/plenum for them. Edited March 10, 2015 by Mechanical Sympathy Quote Link to comment Share on other sites More sharing options...
Lord Charper Posted March 10, 2015 Author Report Share Posted March 10, 2015 You wanna do a suck through set up with carbs. I don't think the carb seals would handle the boost well if they're after the SC. EFI would be a better option. Also if you do a draw through set up then fuel is passing through a supercharger, the seals will need changing to be fuel resistant. Otherwise the fuel will eat the seals away in no time at all. Further more any seals/silicon in the "cold/intake side" will need to be fuel resistant. Unless you go for an EFI or blow through setup. I'm not sure if the carbs you have can/ could handle it or if there is enough knowledge on setting the carbs up correctly. An SC14's seals are fuel resistant. I've considered this, by eyeballing it for a 2TG. I think the main reason why bolting an SC14 to a 2T isn't common is that the SC14 is quite long and would foul on TA/TE engine mounts when adapted to mount on a 2T A/C bracket. However when a 2T is mounted in a KE using modified block mounts, the mounts are effectively 30mm further back, liberating enough space for the SC14 to nestle in there. Food for thought. Anyway - forget the idea of blowing through two sidedraft carbs. I expect it would be hard to tune. You'd be looking either draw through a single 32/36 Weber (but then you need to consider how you'll bypass fuel-rich air around the supercharger at idle - or just let the S/C spin in a vacuum at idle which apparently makes it get hot) or, blow through a single 32/36 with a rising rate fuel regulator to push up the fuel pressure to match against the boost. I mention the 32/36 because anecdotally they seem to be able to handle boost without needing to be in a sealed container or blowing out seals, can be purchased new (to mitigate potential problems) and you can get a nice turbo hat/plenum for them. You thinking staying carby or converting to efi? Hi Guys, I was planning on doing a draw through system because I don't want to have to put all of it in a sealed box. I happen to have a 32/36 that probably has under 200 miles on it. I am also not totally sold on the SC14 due to the electronic clutch. Is there a way to control that with an aftermarket computer? Otherwise, I will need to fab up a bypass driven off of vacuum. I am not sure that I have the technical knowledge. Having said that, does anybody have any ideas for compact superchargers? My main goal with this is to get about 20-30 more HP than stock and to help with the low end a little. Thank you all for the help, Chase H Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted March 10, 2015 Report Share Posted March 10, 2015 The beauty of a clutched SC is being able to turn it off. I have bypassed my ecu on my 4agze so I can control it better. I have a button on my steering wheel which locks the clutch on and off for quick power (overtaking etc). I also have a button on my dash which can toggle the SC to be always on, or ecu controlled. Plenty of ways to control them. I had an idea to use a shift light, set the shift light to very low revs if possible (around2k rpm) and wire a relay off the light circuit to operate a relay controlling the clutch. Quote Link to comment Share on other sites More sharing options...
Lord Charper Posted March 15, 2015 Author Report Share Posted March 15, 2015 The beauty of a clutched SC is being able to turn it off. I have bypassed my ecu on my 4agze so I can control it better. I have a button on my steering wheel which locks the clutch on and off for quick power (overtaking etc). I also have a button on my dash which can toggle the SC to be always on, or ecu controlled. Plenty of ways to control them. I had an idea to use a shift light, set the shift light to very low revs if possible (around2k rpm) and wire a relay off the light circuit to operate a relay controlling the clutch. Sounds like I really need to do some planning before I take this on! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.