get that dyno sheet up im interested in the difference between a turbo and sc. Im thinkin of doin this to my vl to see how it goes but defenetly not spending 2000 bucks. thanks

Come to me Some original photos have not been recovered yet.

for what? supercharger? how much? Some original photos have not been recovered yet.

got the extractors on.made 1 hell of a difference. ive got to go down to melb next week for tafe. im hoping to get the dyno done fairly soon after that. will post it up when it gets done.

been on the dyno yet mate. Some original photos have not been recovered yet.

My superchager is for sale. perfect con, PM me.

mine is fine. i dont require a new one.

Someone asked before about how hard to get 100rwkw. My vl gets 110rwkw and all it has is a 2 1/4" exhaust, no headers, high flow cat, pod filter and stage 1 cam. Admittedly it only has 70000k's and has beeen well looked after. I am currently fitting an eaton m90 which i bought for 500 bucks which at 7psi should increase it to approx 145-150kw without an intercooler. My advice is to not get sucked in by high priced charger kits but be smart about it. With a bit of time and effort you can make more power for less money and get more satisfaction out of it. but thats just my opinion.....

when i hear ppl say they wanna be different i automatically think, "they're gonna spend some stupid large amount of cash". which is fine if you don't like money and your an eccentric billionaire. to pay what you did and not even get a fuel upgrade is insane. sell it off to some sucker for close to buy price and buy this matty dudes setup, looks way the shlt!

i have new injectors and quite a bit of stuff that i am going to be putting into my motor. and in my eyes for what i have gained from the money i have spent i belive it was well worth it. if you see the pics mine is acually a different charger than matts and i have no intension of trading down to a used one. especially when this works like a dream and is alot quieter than matts was. sleeper all the way. also this runs 10 psi. and i should already be at the 140-150 rwkw and thats before i put in my new cam.

so thats a no?

sorry didnt see your post. i havent been over there yet because 1. the place i was going too closed for a few weeks, i belive it was a family problem, and i didnt get a chance after that. 2. money is a prob atm. bills just keep rolling in. 3. im thinking that i will leave it untill i have put in my new cam and intercooled it. but then again with the way things have been going i will prob change my mind again and get it on there in a couple weeks. how is your set up coming along anyway?

still in pieces but pretty close now just finishing of all the little fiddly stuff and then put it back together. hopefully ill have it back within a week or maybe two.ill post some pics or somethin when its finished. goodluck with the dyno.

Great work Nishmix. There are a lot of advantages to buying a proper kit, and it very neatly solves the two biggest problems of mounting and driving the supercharger. Just drive the car for a while and enjoy the improved performance, and save up a bit of money for the next stage. Both Matty and Stocky are very experienced experts at supercharging, and you can rely on their advice 100%. The next stage should probably be extractors and a cam, but you will not be able to fit an intercooler to it the way it is now with the throttle mounted ahead of the supercharger. Well you can, but the results will be pretty horrible because of all that extra pipe volume between the throttle and the engine. With a free flowing exhaust and cam fitted, expect to lose quite a lot of boost pressure, but the car will go much harder on less boost, which is definitely a step in the right direction. Running a big intercooler is an excellent idea, but first the supercharger will need a proper bypass valve fitted, and the throttle body will need to go back to where it originally was. Either Stocky or Matty can tell you how to modify an external wastegate by fitting a much lighter spring. That is all it needs, a different spring, and it will make a perfect supercharger bypass. The advantages of doing this are throttle response will be far better, and you will find fuel economy will significantly improve, and the supercharger will not run anywhere nearly as hot and as noisy as it does now. Not a lot of extra power in doing this, but the engine will run far better, and it will be much nicer to drive. When all that is sorted out, a big front mount intercooler can then go on without causing any problem with throttle response or drivability. It sounds like a lot of work, and it is. But the results will be well worth it. The existing ECU, injectors, and supercharger should easily get you 150Kw at only maybe 3-5psi boost. When you get to that stage, if you still want a lot more power, it would be best to go twincharge, with full aftermarket engine management, rather than try to develop the supercharger system further.

thanks for your imput Warpspeed. i already have the extractors on, had to get these straight away as there was too much back pressure with the standard exaust manifold. it was that restrictive that after going for a drive the manifold was glowing red. putting these on made a lot of difference and made throttle responce improve greatly. as for the intercooler, i was talking to CRS and they were telling me that while testing this they had originally tried it with the TB in standard position and it didnt perform as well. this may be different with the bypass valve. im going to give it a shot anyway how it is situated and see if it works.doesnt hurt to try. i am already looking into cams and i am trying to find out if the stock ecu will handle the charger and the bigger cam. i want to try and achieve 200 rwkw. i have turbo injectors, fuel rail and plenum to go on to it aswell. if the ecu wont handle it i will get a turbo one for the time being. as for spending the money, i think it saved me a lot of time and effort to have the brackets pre made. also i belive you get what you paid for. sofar its been nothing but a dream to drive. thanks again guys.

Quote: Originally Posted by Warpspeed Both Matty and Stocky are very experienced experts at supercharging, and you can rely on their advice 100%. ooh im blushing I called up stocky and got him to help me with some pully size maths, he thinks things through alot and gets them right, i keep trying them too see if its right. I waste money, time and motors, he gets it right first time, Every time. But now i know whats going on, What not to do and what to do.. I still get alot of Pms asking about how to do it and more advice and so on, its cool that alot of people are willing to take on a chalange disspite alot of people on here giving them sh it about it, mostly the ones that havnt even worked on there motors and just pay others to. Keep up the good work and keep posting, I was thinking about getting another VL and starting again on the SC.. Some original photos have not been recovered yet.

i didnt even realise they had just posted that in here matty. oh well thanks anyway. and yes you would have saved alot of time getting the brackets premade because i made my own and it took weeks of taking off the bracket and putting it back on then it wasnt right so i had to start again. but the whole conversion is almost finished now so hopefully its all worth it. Some original photos have not been recovered yet.

I agree, the kit provided the proven reliable drive system, and some very well made mounting brackets. Unless you have access to full workshop facilities, it probably has saved you a LOT of time, money, and stuffing around trying to fix various problems. I believe you did the smart thing getting a kit, at least for a very first supercharger project. Now about the throttle body location... Try to imagine how having the throttle in the original location would work when being forced fed with a positive displacement supercharger. If you think about what a positive displacement supercharger actually does, it gulps in a fixed volume of air per revolution, and feeds it into the engine under pressure. That is pretty easy to visualise at full throttle. Now try to imagine what happens at only quarter throttle. Exactly thee same amount of air goes through the supercharger, but there will be a fairly high pressure drop across the part open throttle. but the same amount of air still goes into the engine !!! Basically the throttle simply can no longer control airflow properly. It will feel truly awful to drive, there will be jerks, unexpected surges of acceleration, and hesitations, and it will just not feel right. Think about what would happen if the throttle slams hard shut at high supercharger Rpm, there is nowhere for the air coming out of the supercharger to go. Boost pressure ahead of the throttle would spike incredibly high, and will probably burst or blow off a hose, or slip/snap the drive belt. It simply cannot work properly like that. That is why the kit supplier has moved the throttle to the blower intake. At least it has some chance of working properly there. But moving the throttle to the blower intake also introduces two significant new disadvantages. The first is that the supercharger is always sucking hard against the closed throttle, like a giant vacuum pump. It requires crankshaft power to do that, and it always places some extra load on the engine at small throttle openings. That constant drag on the engine by the supercharger, will reduce fuel economy around 10%, and cause the supercharger to always run fairly hot, and make some extra noise off boost. A supercharger mounted throttle is not going to reduce flat out engine power, but it is just not as good as it could be, when mounted ahead of the blower. The second disadvantage of mounting the throttle on the blower intake is the extra plenum volume. The pipework after the supercharger adds directly to the plenum volume. That extra pipe volume needs to fill and empty every time you move the throttle, and that slows down engine response. Right now you will not feel it because the extra bit of pipe is fairly short, and the extra power created from supercharging conceals the effect. But if you add a massive front mount intercooler, plus maybe two metres of extra fairly fat pipework, you sure will feel the effect of reduced throttle response, especially when you snap the throttle shut. The revs will just not come down. It is a really strange feeling to take your foot right off the accelerator, and see the tacho still sitting right up there for a second or two. I am not kidding ! It makes changing gear really slow, and it feels pretty nasty to drive. Try it and see, I don't think you will like it at all. All factory supercharged cars that run intercoolers, keep the throttle after the supercharger, and have a system to bypass unneeded air around the supercharger when the throttle is not wide open. And that is the very best possible way to do it. While I am sure the kit you already have works fine, it will work considerably better with a proper air bypass system, and putting the throttle body back where it originally was. That becomes especially true if you are planning to fit an intercooler. So the bottom line is, it will work fine how it is right now. But later on, plan on fitting an air bypass system around the supercharger, and move the throttle back to where it originally was, the engine will run far better like that in so many ways. It is possible to build a high power engine that is smooth, has instant response, and excellent fuel economy. But it is equally easy to build a high power engine that is an absolute dog to drive. It is just a case of thinking through all the details and doing it properly.

nice book, going to get it published? with the TB befor the SC, The SC is free spinning with no air, Making it so fu cken hot its not funny. Cant put your hand with in 200mm of it. With the TB in the stock place and using a bypass valve i could allmost leave my hand on the SC.. and i think that becuase it was sitting next to my extractors..

Quote: Originally Posted by [T]Matty ooh im blushing I called up stocky and got him to help me with some pulley size maths, he thinks things through a lot and gets them right, i keep trying them too see if its right. I waste money, time and motors, he gets it right first time, Every time. But now i know whats going on, What not to do and what to do.. I still get a lot of Pms asking about how to do it and more advice and so on, its cool that a lot of people are willing to take on a challenge despite a lot of people on here giving them sh it about it, mostly the ones that haven't even worked on there motors and just pay others to. Keep up the good work and keep posting, I was thinking about getting another VL and starting again on the SC.. Yeah, it takes knowledge and experience to do this stuff and get a good result (as well as money). But I am willing to have a go, and eventually usually end up learng things myself the hard way. Most of it is fairly logical, if not exactly obvious, once someone has pointed out a few things. There is also a bit of luck sometimes in getting things exactly right first go. And pulley sizes are definitely the most difficult thing to guess. But the Forum is a great place to toss around different ideas, and pick up some practical tips from others that have already solved some of the many problems. But the violent hostility of some of the more ignorant people on this Forum to anything new or a bit different really surprises me. Some original photos have not been recovered yet.