alex1985blue 0 Posted March 2, 2009 Report Share Posted March 2, 2009 Was thinking about buying an M62 or M90 charger from a merc and running it on my VR, but not sure what is needed for the conversion?Anyone done this? Experiences??Cheersalex Link to post Share on other sites
mike 6 Posted March 3, 2009 Report Share Posted March 3, 2009 yea there was one on here a while ago, do a search ? Link to post Share on other sites
craggsy 91 Posted March 3, 2009 Report Share Posted March 3, 2009 Well the M62 is the right one to go for.....M90 is designed for 3litres plus Link to post Share on other sites
mike 6 Posted March 3, 2009 Report Share Posted March 3, 2009 found the eaton charged vr6: http://www.vr6oc.com/e107_plugins/forum/forum_viewtopic.php?215746.0he used a m90 tho craig? Link to post Share on other sites
krave 0 Posted March 3, 2009 Report Share Posted March 3, 2009 Without sounding stupid here or menaing to hijak, on this eaton charger, is the Square hole where you would bring the air in, and then push it out where the current tb is, so you would remove the tb and make a plate over the square leaving a whole for a air pipe??then custom mounting and the moving of a few ancileries?? and a map and belt. http://i357.photobucket.com/albums/oo19/72van/Charger/DSC00114.jpg Link to post Share on other sites
kcw 1 Posted March 3, 2009 Report Share Posted March 3, 2009 Yeh krave thats it I think, You'd make up a big adapter going from that sqaure to a circle for a Maf or air filter then when the TB is on that would go to your intercooler. Link to post Share on other sites
kcw 1 Posted March 3, 2009 Report Share Posted March 3, 2009 Yeh krave thats it I think, You'd make up a big adapter going from that sqaure to a circle for a Maf or air filter then when the TB is on that would go to your intercooler. Link to post Share on other sites
xyber 1 Posted March 3, 2009 Report Share Posted March 3, 2009 This was the guy that did it Link to post Share on other sites
alex1985blue 0 Posted March 3, 2009 Author Report Share Posted March 3, 2009 Guys, We really need to figure out if it is best to run an M62 or an M90.Which do you guys think is best?On eatons website they say:The Eaton Supercharger Model 62 is designed for 2.5L to 4.0LAnd:The Eaton Supercharger Model 90 is designed for 3.0L to 5.0LWhich do you think is best? as out 2.8 engines are near as damb it 3l which leave us being about to use either.What do you guys think?Apparenty the M62 displaces 1.00 litre if air pers turn and the M90 displaces 1.50 litres of air per turn.Which do you think is best?CheersAlex Link to post Share on other sites
mrbeige 0 Posted March 3, 2009 Report Share Posted March 3, 2009 I think the M62 may be a better fit, as the M90 will scavenge more power from the crank Link to post Share on other sites
xyber 1 Posted March 3, 2009 Report Share Posted March 3, 2009 I think the M62 would be better aswell as its smaller, but, these chargers will create a fair bit more heat than a centrifugal one like VF or Rotrex and arent as efficient, plus you have all the extra fab work to contend with and very limited knowledge on the in's and outs of doing it. I know the alternator needs relocating to the rear of the bay and an adaptor made up for the inlet mani, then finding a suitable belt to run it all, without slipping like a bitch ( I think I saw on Vortex someone used a 1.5mtr long belt!!)It can be done obviously, a few US companies tried to develop a kit but abbandoned the idea as it was a bitch to do and the centrifugal type charger works better on a VR, which is why the likes of VF are now so popularPersonally, if I where to do it all again, Id save up and get a Rotrex set up, at least then its tried and tested and reliable with plenty of support on forums when needed Link to post Share on other sites
mike 6 Posted March 3, 2009 Report Share Posted March 3, 2009 would have said m62 but i am blonde lol Link to post Share on other sites
alex1985blue 0 Posted March 3, 2009 Author Report Share Posted March 3, 2009 I think the problem im having is that to get a conventional supercharger kit is the best part of £1500/ £2000 which i dont have or want to spend.Ive had a few looks around and from what ive seen the alternator can be moved to where the aircon pump should be and the charger placed where the alternator usually is.Apparently that works.Ive already spoken to a guy that is able to fabricate the mounts and the blanking plate to go over the supercharger to create circular outlets so thats not really an issue.What do peeps think now? Still not worth it? or go for it? Link to post Share on other sites
gavinvr6 0 Posted March 3, 2009 Report Share Posted March 3, 2009 alex its totally up to u, if you think u can make it work then go for it, ive heard of these conversions being done and being succesfull. i started looking into it a while ago but decided against it when the motor took a sicky on me and wiped out my funds Link to post Share on other sites
FishWick 21 Posted March 4, 2009 Report Share Posted March 4, 2009 Positive displacement chargers are far better for torque than centrifugals. The Eaton will be making torque far lower in the rev range than the Vortech / Rotrex etc, which do feck all until ~ 4000rpm.Tricky to fit, but more rewarding imo.Yes the Eatons sap power, but so do the Centrifugals. Link to post Share on other sites
xyber 1 Posted March 4, 2009 Report Share Posted March 4, 2009 Id imagine at about 2-2.5k the torque would start to pull, but tail off further up the range, kind of like a G-laderWould the car be your daily driver? If its not go for it, then you arent under pressure to iron all the kinks out fast to get it back on the road and gives you plenty of time to get it spot on and reliable and no doubt lots a messing around with MDF trying to make up patterns for the mounts to be machined Link to post Share on other sites
LarkinBoy 0 Posted March 4, 2009 Report Share Posted March 4, 2009 Hi there, the m90 is the one to use as even that runs out of puff, but m112 is just real tricky and big i think to package nicely, but the boost would be nice. With the m90, torque is strong from 1500 rpm at 175 lb/ft up to 270 ish at 4000 rpm :-d Link to post Share on other sites
The Monk 50 Posted March 4, 2009 Report Share Posted March 4, 2009 Either the OP has been reading performance VW or it's a fluke...I've been reading it today and I'm slightly intrested in an eaton charger. Link to post Share on other sites
FishWick 21 Posted March 4, 2009 Report Share Posted March 4, 2009 Id imagine at about 2-2.5k the torque would start to pull' date=' but tail off further up the range, kind of like a G-lader[/quote']Yep. PD chargers build boost very quickly, then level off and hold the set boost to the redline. Well, good ones sized to the application accordingly do. some tend to drop a little boost as the revs rise. Centrifugals as we know, need revs to make the boost, the more revs, the more boost.PDs are better for every day drivers imo, the torque's right where you need it :-) Link to post Share on other sites
xyber 1 Posted March 4, 2009 Report Share Posted March 4, 2009 They used to be on ebay all the time for as little as £100 as people with Mini's quite often upgrade early on, so for that kind of money its worth buying one to have a mess around with to see if its viable for you, if not the saxo boys love them so you'd get your money back easy, or even give it a polish up and then sell to a saxo boy for a tidy profit Link to post Share on other sites
alex1985blue 0 Posted March 4, 2009 Author Report Share Posted March 4, 2009 Either the OP has been reading performance VW or it's a fluke...I've been reading it today and I'm slightly intrested in an eaton charger.?? Link to post Share on other sites
alex1985blue 0 Posted March 4, 2009 Author Report Share Posted March 4, 2009 Positive displacement chargers are far better for torque than centrifugals. The Eaton will be making torque far lower in the rev range than the Vortech / Rotrex etc' date=' which do feck all until ~ 4000rpm.Tricky to fit, but more rewarding imo.Yes the Eatons sap power, but so do the Centrifugals.[/quote']I heard the exact sme thing as well.The car is a daily, but would be set up by a company rather so they can iron out the small issues rather than me. Link to post Share on other sites
alex1985blue 0 Posted March 4, 2009 Author Report Share Posted March 4, 2009 Hi there' date=' the m90 is the one to use as even that runs out of puff, but m112 is just real tricky and big i think to package nicely, but the boost would be nice. With the m90, torque is strong from 1500 rpm at 175 lb/ft up to 270 ish at 4000 rpm :-d [/quote']Is this advice from experience? Still not completely convinced that the M62 is the right charger.Want to be running about 300hp by the end of the build.What do other peeps think?Cheers Link to post Share on other sites
krave 0 Posted March 4, 2009 Report Share Posted March 4, 2009 would a m62 give a nice bit of extra power or would it be put on and leave you feeling like it doesnt work right. if you know what i mean.if a m62 boosts ok and doesnt drop and feel wrong id give one of them for a go. Would be happy with say 230/40 brake. Link to post Share on other sites
alex1985blue 0 Posted March 4, 2009 Author Report Share Posted March 4, 2009 I know what you mean, dont want to either fit a supercharger that is too powerful, and ends up leaving the car up drivableThink 300hp would be nice though Link to post Share on other sites
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