possible blower setup
Turbo Mini Forums

Hi guys, right I been thinking about possibly putting a supercharger onto my engine. Just with my current spec I'm after advice as I've done some searching about it but cant find anyone with 10:1 compression ratio and was wondering is this like impossible to run without problems?

I was looking at the eaton M45 charger. My current setup is a 1380cc built by MED, worked head with 36,31 valves, 1.5 roller tip rockers, arp head studs, omega lightweight 7cc pistons, lightened balanced cooper 's' conrods, arp bolts again, wedged bladed back-drilled cross-drilled worked crank, centre main strap, 286 kent cam, duplex timing chain, straight cut transfer gears. the engine has done probably just over a 1000 miles but I havent had it RR as of yet, but I know there could be more power.

With that said, the block and head were skimmed (how much?) I do not know but the comp's up to 10:1 as I said earlier. Am I looking at having to change the pistons as an easier choice or a new head? Also will the cam want changing whilst I'm changing thing's with its power band being different to the charger or not? Thing is aswell I haven't decided what boost to run to. I wanna get close to the 160 bhp region if possible. I have also got my MJ to put on once Mr fentonator makes the batch of brackets.

Anyways much help appreciated.
Quinton

http://photobucket.com/quintonrose

you can get away with hotter cams with super chagers, but the 286 is probably about as hot as you want to go with a blower.

you need to drop the compression,

i'd whip the head off and see if you can get any material out of the head.

Minimum thing to do would be to change the head for one with a larger combustion chamber to bring the compression ratio down. Also smaller valves as the extra heat may cause problems with the thin wall between the large valves.

The cam is probably too racey. The high overlap will mean a lot of the inlet charge going straight through.

Your biggest problem with most supercharger installations is the lack of effective intercooling. A good intercooler will add 20-30% more power for the same boost. However, I've not yet seen a kit or DIY setup that uses an intercooler with the M45.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Was reading on the intercooler but like you say I can't find any setup's with suck-through but I know there is power there to be gained, so did more digging and found water injection could be used which should help this problem slightly?
I was hoping the head was the easiest solution to this as I have spare 1275 engine sitting waiting to be used. As for the cam, reading on a 266 cam would probably be more ideal for this project.
Now lets say I run 8 psi as the M45 only goes up to 10 reliably, what compression would I be aiming for 8-9:1? I'll have to get onto stuart to see what he charges for modding the M45 otherwise swap it for one done.

Quinton

http://photobucket.com/quintonrose

If you mean Stuart of Vmax, then I would start there. He has more experience of this than any of us.

Tell him you would like it intercooled and see what he says.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

You could run LPG with that CR.

Bearing in mind that suck through totally alters the compression map of the M45.

I can't see the problem of making the engine work, albeit with very low boost indeed.

Bugger off, I'm getting there.

This could be an alternative...
Made by a bloke in Denmark, and he is known to produce a kit for sale aswell!

PM sent Quinton

feature=mhum

Ah cheers for the replies. LPG, god now thats going back in time lol. Well finally decided 10 psi will be a safe option and that I can either use decom plates just to drop it which could give me an extra 13cc or abuse my spare head i have but i will have to do the calculations to get this right.
I saw that post with that blower but I've had the car back about 5 weeks now from a full respray, that I dont fancy chopping the front out otherwise I would be going down the turbo street . This weekend I might just take a quick pop down the RR and see whats she's actually pushing and if MED were true to their word and from there I can decide. I'll have a look into the cooler for it aswell but I guess its christmas so trying to get the list together for santa to drop off the bits lol.
Might have to move this post to the project section soonish.

Quinton

http://photobucket.com/quintonrose

Also, the fuel has to travel miles in the setup in that pic. Its worse than the vmax setup!! lol

feature=mhum

indeed,

I cant believe they didnt make it blow thru!!

The fineal nail in the coffin of my supercharger set up is that they are prone to dribbling fuel back out the carb when you switch he engine off. This is due to the long inlet track. Trying to find away around it but it's not simple. Also I am working on a charger cooler to fit betwen the charger and it's manifold.

alex1340.. looking at the eaton kit I did think that if you didnt have a servo it might be possible to cut the manifold and use a bike carb as they are so small could fit it with some hose?? not sure on the bike carb angle...
might be able to get it to fit close to the position of mine?

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

That looks very tidy Graham!

internationally known as "big" swede

Had wonders about injection. That is very clean

thanks sorry for the hijack. I was thinking the Eaton kits do have a very long inlet... but the bike carbs are so small you must be able to fit them in without the long inlet

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

it's worth looking at. I mite start another thread about carb sizes etc

mate im free all of 2moz and friday pritty much, i have a few coolers in my garage and you can pick up the relay as well if you still need it. as for the turbo route i could also speak to you about that. also have a few heads laying around if you need one.

paul

On 9th Dec, 2008 quinton said:
Ah cheers for the replies. LPG, god now thats going back in time lol. Well finally decided 10 psi will be a safe option and that I can either use decom plates just to drop it which could give me an extra 13cc or abuse my spare head i have but i will have to do the calculations to get this right.
I saw that post with that blower but I've had the car back about 5 weeks now from a full respray, that I dont fancy chopping the front out otherwise I would be going down the turbo street . This weekend I might just take a quick pop down the RR and see whats she's actually pushing and if MED were true to their word and from there I can decide. I'll have a look into the cooler for it aswell but I guess its christmas so trying to get the list together for santa to drop off the bits lol.
Might have to move this post to the project section soonish.

Quinton

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

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