M Blur Posted January 28, 2006 Report Share Posted January 28, 2006 What sort of boost and power potential does the 'Sport 300' Super 60 (0.63) Garret T3-T4 compressor hybrid turbo have..? What would be the next step up turbo wise from it? Anyone supplying roller bearing hybirds of this turbo? Can anyone give me a detailed technical breakdown of this turbo? Anyone had any experience of MJM in the US? www.mjmturbos.com What is regarded as the best turbo for the 2.2 for track work etc..? Best to all. Jon B) Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
th4neuk Posted January 28, 2006 Report Share Posted January 28, 2006 (edited) have a look at this website. http://www.lotusesprit.org/ Dermot has done alot of work on the 4 cylinder car and he alsohas some good links from the site. HTH Cheers Edited January 28, 2006 by th4neuk Quote Alan Croft 2000 V8 GT 87 Turbo Esprit HC 2000 Elise Sport 160 Link to comment Share on other sites More sharing options...
M Blur Posted January 28, 2006 Author Report Share Posted January 28, 2006 (edited) have a look at this website. http://www.lotusesprit.org/ Dermot has done alot of work on the 4 cylinder car and he also has some good links from the site. HTH Cheers <{POST_SNAPBACK}> Interesting... thx - very good site. Link to WC Engineering blurb - basically the short issue being the Standard Lotus turbo (even the Sport 300 one) can't flow enough boost before back pressure ramps and kills it.. "Then, we look at ceramic ball bearing center sections. The stock center section only has oiled "bushings" supporting the connecting shaft and there is quite a bit of drag associated with it. When using a ceramic ball bearing assembly in the center section this parasitic drag is reduced down so low that it is negligible. We can use a ceramic ball bearing center section, along with a larger compressor wheel and a modified turbine section, to get more volume, more flow, and faster spool up than a stock turbo. This is exactly what we have come up with. Using a ceramic ball bearing center section, WC Engineering assembles a modified turbine section with a machined compressor housing and a larger compressor wheel (larger than the S4s wheel) to produce a turbo that offers improved spool up response, more efficient boost with lower charge air temperatures, and a more free flowing turbine section. This compressor section can flow 41 lbs/min of air or about 535 CFM at 15 Edited January 28, 2006 by M Blur Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
Dermot Posted January 29, 2006 Report Share Posted January 29, 2006 Jon, The Stage 1 WC Engineering turbo is an excellent product. Ideally matched to the volummetric efficiency of the 2.2L engine. The theoretical airflow of this turbo means it should be capable of supporting between 385-400 hp, on my installation the characteristics are ideal for road use. WC do a stage 2 conversion with even more air flow. For racing applications you do not have the same concerns about lag, The new Garett GT series look fantastic, they can support big hp's, the downside is that you will need to do some reworking to the exhaust and or manifold for some of them. Dermot Quote Lotusesprit.org Link to comment Share on other sites More sharing options...
pitstoppete Posted January 29, 2006 Report Share Posted January 29, 2006 i agree with Dermot about the WC turbo. I have one too, and its superb. in fact far too good for my tired fuel pump and 60k std injectors to cope with. all injectors are now totally saturated. visa card about to get a serious hammering with new bits. Quote Link to comment Share on other sites More sharing options...
M Blur Posted January 29, 2006 Author Report Share Posted January 29, 2006 Jon, The Stage 1 WC Engineering turbo is an excellent product. Ideally matched to the volummetric efficiency of the 2.2L engine. The theoretical airflow of this turbo means it should be capable of supporting between 385-400 hp, on my installation the characteristics are ideal for road use. WC do a stage 2 conversion with even more air flow. For racing applications you do not have the same concerns about lag, The new Garett GT series look fantastic, they can support big hp's, the downside is that you will need to do some reworking to the exhaust and or manifold for some of them. Dermot <{POST_SNAPBACK}> Don't think that'll be too a big deal Dermot - as you'll recall - John H was running a very aggressive race map/ecu and big injectors and a custom shortened exhaust system which should be easy to replace, modify to suit.. fuelling set up on my car with the big charge cooler, enlarged front mounted Ic etc.. probaby the tubby is an area that is holding the car back from some big gains tho it seems very strong on a quick run up to the redline with no obvious fall off... I've asked John whether he had the T3.60 clipped in any way.. as you say lag is not so much an issue for circuit use and doesn't need to be as tractable at low speeds as she is currently. Good tip D - Will look into the GT series - I have also heard good things about the GT series etc... 400bhp would be a target for me as it would bring he p-2-w for the car very close to 400 bhp p/tonne. B) and in line with the Sport 300 Le Mans cars. Woiuld then need to look into tranny strengthening tho some of that avoided if power comes on strong further up the rev range where eveyrthing is spinning nicely. If spooling slwrer then will lose a bit time in short racks like Mallory, Knockhill and Cadwell etc but would be good for everything else. Someway off yet - will enjoy the car this season first then get stuck in during the off-season.. Of course if I see a good priced GT then it would be rude not to.. I'll let you know how the car is coming along. Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
M Blur Posted January 29, 2006 Author Report Share Posted January 29, 2006 How about sth like this - especially if I don't need fast spooling for road? I'm also keeping an eye out for new gen Gt types.. not rushing into a buy tho until l've worked out best layout for car to run reliable 400bhp. http://cgi.ebay.com/ebaymotors/GARRETT-BIG...033223784QQrdZ1 Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
f1karting Posted February 2, 2006 Report Share Posted February 2, 2006 Mike Rodregues on this forum has tried every possible turbo combination on the 2.2. I would ask him for advice as well. I bought my Stg3 T3-60 from MJM.. he was good to do business with.. cant comment on his product though.. havnt run it yet. Quote If you set no goals you shall surely reach them.. Link to comment Share on other sites More sharing options...
DBredS4 Posted February 2, 2006 Report Share Posted February 2, 2006 Hi Mr Blur, can you elaborate on the mods that John did for the race car and what spares did he flog you? The ad said his spares package was extensive. Did you buy it all? If not, what was left? Cheers Dom Quote Link to comment Share on other sites More sharing options...
Vulcan Grey Posted February 3, 2006 Report Share Posted February 3, 2006 How about sth like this - especially if I don't need fast spooling for road? I'm also keeping an eye out for new gen Gt types.. not rushing into a buy tho until l've worked out best layout for car to run reliable 400bhp. http://cgi.ebay.com/ebaymotors/GARRETT-BIG...033223784QQrdZ1 The turbo you linked to there doesn't even have a water cooled center section. The Lotus Esprit 89+ all use a water cooled + oiled centersection. Also keep in mind that the Lotus exhaust flange mounting pattern, I've heard of problems with MJM due to no watercooled center section, and incorrect flanges... Just what I heard. Are you talking 400hp to the wheels or at the flywheel? A t3-t4 hybrid could possibly deliver 400hp to the flywheel, but would probalby run out of efficiency beyond that... A true T4 is more likely to be what you need, though the newer GT's are better. Quote Travis Vulcan Grey 89SE Link to comment Share on other sites More sharing options...
M Blur Posted February 21, 2006 Author Report Share Posted February 21, 2006 Plan now is for Turbodynamics to port the turbby + full roller bearing conversion to 600CFM.. should do the trick nicely... will install a better piggy fuel/boost controller.. sth likea SAFC or the like.. Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
M Blur Posted February 21, 2006 Author Report Share Posted February 21, 2006 Plan now is for Turbodynamics to port the turbby + full roller bearing conversion to 600CFM.. should do the trick nicely... will install a better piggy fuel/boost controller.. sth likea SAFC or the like.. Quote It's alive.. alive!!!.. Link to comment Share on other sites More sharing options...
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