Merc supercharger? - General Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Merc supercharger?

Woodstain

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Location: Luton

Registered: 20 Aug 2013

Posts: 62

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Post #1

Hello guys, first off I'm new to the forum so I apologise if this is in the wrong place or my question is stupid! I'm also new to pugs having owned vauxhalls mostly, and two 5 turbos, I recently got a china blue 6 that I love, its quick and handles great, the thing is I would love a bit more poke and was looking at supercharger conversions, (my car did have a lynx charger kit fitted before I owned it) my origional plan was to try and get hold of a second hand lynx kit and fit it myself, however as I love a bit of a project/challenge was wondering if I could use a different type of charger, and after a bit of looking round Found a merc slk 200 charger that I recon I could make work? Does any one know if this would work with the 6 engine? I recon I could fit and mount it ok, I've got someone who can make brackets etc, I just need technical help as don't know much about chargers, although I'm learning fast. Any comments/help welcome. Thanks.
Richard.

Posted 9th Oct 2013 at 16:03

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ian7675

Techno Viking

Location: Gloucestershire

Registered: 12 Oct 2007

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Post #2

Interesting Hmm

sorry I can't give any advice but wanted to say welcome to the club.

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Posted 9th Oct 2013 at 16:07

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Woodstain

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Location: Luton

Registered: 20 Aug 2013

Posts: 62

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Post #3

Thanks mate, no worries I'm sure someone will have an opion/advise!

Posted 9th Oct 2013 at 16:15

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phillipm

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Post #4

Anything will work with a big enough hammer.

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Posted 9th Oct 2013 at 16:17

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #5

Welcome to the club! Wave

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Posted 9th Oct 2013 at 16:28

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Woodstain

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Location: Luton

Registered: 20 Aug 2013

Posts: 62

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Post #6

Thanks guys, anything will work with a big enough hammer! Lol love it. Claw or pin? Ha. I'll just bolt it on then, see what blows up/happens!

Posted 9th Oct 2013 at 17:04

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7057sam

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Location: Stowmarket,Suffolk

Registered: 18 Apr 2009

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Post #7

I have a full rotrex/rich w charger kit straight bolt on.

Pm if your interested

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Posted 9th Oct 2013 at 17:21

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mcvite

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Location: basingstoke

Registered: 23 May 2012

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Post #8

Welcome to the club Wave

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Posted 9th Oct 2013 at 17:44

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jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #9

What year is it off then? I know the earlier ones didn't have a clutch whilst the later ones did.

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Posted 9th Oct 2013 at 17:48

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jamiek_uk2000

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Post #10

It's a big old unit aswell, I'm not sure how you would tie that in with the throttle body to control the revs. The Merc uses a double screw charger doesn't it? They are quite inefficient compared to a centrifugal one and would generate less power due to the drag on the engine that running them creates. They are also better at lower to mid revs, whereas the power from a 6 comes at the top end, which is why a centrifugal charger is more suited to the 6.

It can be done, but I think you'll be disappointed by what you end up with

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Posted 9th Oct 2013 at 18:03

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mattgti6phase2

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Post #11

The merc charger will work fine. A friend of mine has this exact set up on his 205 GTI6. The noise is immense due to the whine you get from this type of charger. Sounds much better than a rotrex application, however his only makes 212bhp so it's a fair bit down compared to the rotrex.

So which is it to be, sound or POOOOOOOOWA??!!! Superman

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Posted 9th Oct 2013 at 18:03

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Woodstain

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Location: Luton

Registered: 20 Aug 2013

Posts: 62

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Post #12

Thanks Sam, I would be interested if I had the money right now, I'm just after info/advise at the min, got to save! How much btw?
I dont know the yr of the charger I was just after info on if it would be possible or not, like I say I don't know much about chargers at the min still learning! If it's not possible or I can't gather enough info/education on it I will be going for the lynx/rotex kit, when funds allow.

Posted 9th Oct 2013 at 18:09

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armzsc6

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Location: Crowborough

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Post #13

I'd be interested to know the torque figures of the 205 though 215 isn't a lot but I've heard it does shift! Love the noise my mates JCW mini makes sounds awesome. But can't keep up with my 6 Superman

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Posted 9th Oct 2013 at 18:11

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jamiek_uk2000

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Post #14

I would personally hold on until you can afford a rotrex, that's what I'm doing. There has been plenty done before so any issues that may arise have already been dealt with and also I think that you will easily be able to sell this setup if it comes to it whereas if you make your own it will be a much harder sell. Anything is possible if you have the machining and time (and PhillipM's hammer)

Matt, would you be able to get some photos of the setup he has used, it would be nice to see how he has gone about it.

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Looking for:
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Posted 9th Oct 2013 at 18:14

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Woodstain

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Post #15

Wow this is great info guys thanks, I was looking at the spooks (don't kill me) inlet modification that retains the Origional throttle body and throttle cable doesn't it?
I would be happy with 212 bhp that sounds good, and if I can do it properly a lot cheaper too. I know, cheaper and properly not normaly in the same sentence but like I say I love a project! Lol
Any pics of that 205 matt?
I might just hold on for the rotex too for much the same reasons u say, but I do like the idea of built not bought. (within reason lol)

Posted 9th Oct 2013 at 18:20

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jamiek_uk2000

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Post #16

I've never liked the sound of the Mini charged, it is a nightmare on long journeys. Nice whistle and your away Yes

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Looking for:
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Posted 9th Oct 2013 at 18:16

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Woodstain

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Post #17

I think I might give it a bash, what's the worst that could happen? Ha!!

Posted 9th Oct 2013 at 19:46

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jamiek_uk2000

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Post #18

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Looking for:
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PR1.2 16"

Posted 9th Oct 2013 at 19:58

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allanallen

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Location: Buxton

Registered: 01 May 2007

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Post #19

Wow, well Jamie's certainly full of s**t! :p

Early slks used eaton m62s with a clutched pulley, once you've put a proper pulley on it and got your ratios correct it'll be good for 300+ bhp. Charge temps aren't ridiculous if you intercool them properly. Eaton 'rootes' chargers (not screw) are fairly efficient up to 10psi ish. The m62 is also a pretty compact unit, smaller than the later m45s in fact!
Later slk/clk used a smaller m45 charger like the BMW Mini Cooper s uses. They're good for over 250bhp and this is proven by myself as well as many more people on various engines. Mine also makes 180ftlb from 2000rpm upwards, peaking at over 200ftlb and 250bhp at 7k. I've not seen a 'low boost' rotrex make torque anything like that,I'm not talking peak figures here I'm talking low down nicely spread torque that makes a car real world quick.

Borrow phils hammer and get it done.

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Posted 9th Oct 2013 at 20:43

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Woodstain

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Location: Luton

Registered: 20 Aug 2013

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Post #20

Ha! Most probably! But fudge it gotta try.
Borrow the hammer and Get it done... Yup loving that attitude! Hmmmm inspiring!

Posted 9th Oct 2013 at 20:47

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allanallen

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Post #21

Just to add, fitted to a high comp engine with n/a cams mine pulls frantically to the redline. They might run out of puff at high revs on an old jag or merc but not in our application.

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Posted 9th Oct 2013 at 20:54

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Woodstain

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Location: Luton

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Post #22

That's great info thanks allan! Might have to pick your brain some more!

Posted 9th Oct 2013 at 21:02

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jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #23

Well I wouldn't say full of s**t, I wasn't 100% if it was a screw or root (not massively different in design and application) the early ones did have a clutch as I said which was pulled later on.

The unit itself is quite small, but creating the inlet was what usually makes it a bulky unit. I just wondered about how you would connect it to the inlet, whether there is something that could be scavenged off another car or something that would have to be custom made to make it fit.

Plus, centrifugal chargers put the least amount of drag on the engine due to the design which is why they usually give higher BHP figures at the upper rev range. The other two types of charger give constant torque and BHP through the rev range which does drop off at the top end of the revs

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"

Posted 9th Oct 2013 at 21:09

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allanallen

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Post #24

My inlet is similar to a lynx item and the charger is connected by pipes via an intercooler? It's very simple

Care to point out where the power trails off on my printout??

No offence Jamie but repeating stuff you've read without any experience is very unhelpful.

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Posted 9th Oct 2013 at 21:24

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Woodstain

Junior User

Location: Luton

Registered: 20 Aug 2013

Posts: 62

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Post #25

Ok I'm learning a lot, but one thing I'm not clear on is, do chargers have an oil feed from the engine or it's own kinda oil circulation? I know it's got to cooled but not sure if it's oil fed like a turbo?
Plus if I just used the pulley it came with (m45) would that be ok? I'll have to do more research particularly on oil, pulley sizes, but ill give it a go I think sounds fun.....

Posted 9th Oct 2013 at 21:26

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