brp m45 coldside info?
 

Anyone know much about the BRP 1.8L m45 coldside setup?

I found the SC unit and the Intake manifold. It's missing the throttle inlet, pulleys.

I'm trying to figure out what its worth.... and if its worth having around.
http://memimage.cardomain.com/ride_i...0012_large.jpg

That car belongs to a guy whose handle is 200bhp on miata.net and OnlyMX5ives on Nutz: Startseite

My dad just bought a 5 with a coldside M45 kit on it, (after abusing my car - MP62 Hotside circa 210bhp), at a trackday and loving it)

Having driven a CS the throttle response is mental, you can't hear the charger whine at all, it really feels just like a big engine, (more so than my charged 5 due to the lack of whining).

His car has a 67.5mm nose pully, it's driven from the alternator pulley (150mm) so the pulley ratio is pretty healthy :). The tune is pretty conservative, but we reckon it's about 180f/whp. The intake mani is tapped and ready to go for 4 port WI, that's the only way we're going to be able to get more power out of it now.

The tensioner assembly sucks, it uses the alternator tensioner, and there's about this much >< belt wrap on the alternator, so it squeals like hell on first start for about 20 seconds, there are DIY methods of improving the design, (VW tensioner and big sheet of steel).

In short I like it a lot, it's unbelievably OEM to drive, but you are limited on the amount of power you can make.

EDIT: If you already have a turbo, bolt it on and be twincharged ;) that's what I'd do :D

Lol... that would just be bad. Plus I'm 1.6l. I do have another miata now though....

What do you think the SC and intake manifold are worth if its just them alone?

What difference does the engine size make? If its stock, (your sig is confusing, is it stock or pushing 230 ;)), you should just bolt it on :)

Dunno on worth, you've got all the important bits, plus I'm on t'other side of the pond which may squew values.

For one... I have a custom intake manifold. For two, I have a 1.6l.... and the bolt on IM linked to the SC is for a 1.8l. Small issue....

I guess i'm just curious as to what they are worth and if I should keep it around for whatever other project might arise.

Ah good point! You should either sell it to me for buttons or keep it for another project ;)

You must be British... 'buttons' heh.

Some pics
http://i295.photobucket.com/albums/m...d/DSCF0110.jpg
http://i295.photobucket.com/albums/m...d/DSCF0112.jpg
http://i295.photobucket.com/albums/m...d/DSCF0111.jpg

If you do decide to fit it, tap the mani for WI and fit the nozzles ready in anticipation, once the fuel rail is on it's impossible to get at their location.

I still have no idea what it is worth... and thus can't make an offer on it.

So for now.. i don't own it.

Ahh sorry, I thought you wanted a price as to what to sell it for!!

to buy, as it's incomplete, I'd probably offer £750-800 here in the UK, that's what, $1000 over your side of the pond?

Planning on doing a twincharged car? :)

1.6l using a 1.8l specific SC isn't really something I feel like rigging.

Not sure if you had seen this yet, but may help you see how much work is needed to make it work.

revlimiter.net - Coldside Idler System

How much work?

That seems like very little work honestly. One adapter plate and a few parts. Some time fabricating (dremel and drill)...

Not many BRP CS kits around. I got in on the second (and final I believe) run of castings. I went from JR hotside at about 9psi to BRP CS at about 8psi and it was about the same overall acceleration "thrust" but the CS pulled like a stock bigger motor. I'm not sure what Richy was driving in but mine whined like crazy! :)

I ended up going to the stock JR pulley for a little more mid range boost and lost a little top end but it was still fun... I actually still the BRP CS pulley if anyone needs one.

I'd say with a used blower you should pay around $300. It is going to be some trouble to piece together the other parts but you'll be able to do it.

Good luck!

Oh yeah, and belt slip was my nemesis! I never quite got it solved but extremely tight helped ;)
http://img.villagephotos.com/p/2006-...ValveCover.jpg

It has a Larini catback and a JR manifold, I expected to be able to hear it whine, but you can't hear owt!

Coldside is generally quieter than hotside.

And to be honest the stock setup is garbage, so even if you had it, you'd end up making this anyway. (I am!)

another version of the same thing:

Idler modification.htm

I had a JR header, JR cat, and RB catback...it wasn't exactly quiet! :)

Dunno then ;)

Btw, are you coming to the WCMC event this Saturday at Maywood?
I'll have my Coldside M45 car there. I'll be in class G.

I won't be. Car is still on jackstands... hoping to have it on the ground this weekend. Then I have a bunch to finish before a 2day Autobahn event on the 18/19th.

Any of you coldsiders live in Cali? I sold my car to a kid here in MA who promptly got a job in Cali and drove my baby out there. It then surfaced again for sale and disappeared. '94 Black & Tan.

Didn't mean you couldn't do it, just that if there's a lot of work involved, drop the offering price.

Could be due to the pulley design. BRP used really narrow, sharp ridges on their pulleys and weren't conducive to good surface area for grip.


Splitime - PM me with your email address if you want the original BRP CS install instructions.

It's not the charger pully that slips it's the alternator, and that's purely because of the shitty design of the tensioner, there is about 1/2 cm of beltwrap on the alternator pully!

Yeah the original JR design had belt slip issues at the SC pulley, and the BRP had issues at the alt. Neither were perfect but the new designs seem a lot better.

I still can't figure out what happened to BRP... It seemed like BRP was moving foward because Moss/Jackson Racing bought into their M62 design, then all of a sudden BRP was out of business and JR is selling the M62 kit. Now FM dropped the Uber and is selling a similar M62 kit. What??

BRP ran out of money and changed their name to SOT. Then SOT got bought by the company which was making the supercharger kit parts for BRP/SOT. Then they decided to not sell retail anymore and FM took over.
Now FM sell the BRP/SOT kits.

Moss' kit has nothing to do with that. They sell their own kit, which they probably created after playing with some BRP kits.

So lets see. Everything for the kit was found except for the belt. Plus some meth kit pieces that were with it.

Now what are we looking at?
I'm still unsure if this will just sit on the shelf awaiting some future project.. or be resold here/m.net etc... :p

Jfdi ;)

Put it on the 1.8L and come play with it at the WCMC autocrosses.

Btw, if you want to make the good idler bracket I can give you a printout of its shape. Then you buy 8x12x1/4 sheet of aluminum from McMaster and for less than 20 bucks you'll have a bulletproof idler. You don't need his belt cause you have to buy a different size one.

If I pick it up, I'll definitely take you up on that.

I don't have a 1.8 to stick it on though. Not sure it would really be useful on a VQ30 either...

True given the use of a 4-ribbed belt on a waterpump, supercharger, and alternator is a little overkill, sometimes the squeel isn't just a result of the small belt and/or pulley alignment, but of a more serious concern. The M45's a great supercharger, except that some generations have way too little gapping between the rotors and the endplates. When the bearings do start to wear with time, the backs of the rotors start to rub on the endplates... (My second M45 was rubbing so bad, that the coupler disintegrated into a black ball) Just so that the belt will start squeeling. Idk how many miles you got on the blower, but i've done two supercharged m45 miata's. The first one always squeeled and the second one squeeled as well and made a horrible noise for lack of fluid, (Rotor bearing seal had gone out allowing pulley nose fluid to leak into the rotor assembly. After I had my second M45 professionally rebuilt, the pulley nose, the rotor assembly remachined, the needle bearings every thing. It came back a new supercharger. No noise, and absolutely no belt squeel not even on the first turn of the engine...

Now if I know anybody who is interested in the M45 superchargers for the Miata's, I go ahead and tell them to take into account the 500-600 dollars necessary to rebuilt the unit because there are plenty of them out there that are sold as perfect working units, but really they aren't...

I know i'm making a big deal out of it, but I was amazed to see the difference a fresh supercharger makes verses the pieces of shit that I ran before... I could rev it to 7000 rpm's in neutral and it wouldn't squeel not one bit...

I know what your saying Cody, a guy on our Nutz forum is an engineer and offers a service to rebuild superchargers.

He says that the bearings used in the M45 are cheap garbage, so when he rebuilds them he uses top quality bearings in replacement.

He's just rebuilt my MP62, (his first MP62), apparently that comes with really good bearings, (£45+ for the nose bearing alone!), There are less bearings in the MP62, but higher quality.

It seems to be that if you buy a 2nd hand M series charger you should get it rebuilt, but it's less critical on the MP series

Exactly, there have been plenty of m45's returned to magnuson under warranty due to this issue...

Not sure Ima go through with this.

Anyone want to buy it? He mentioned he found everything minus the pulleys plus the partial Meth/water kit.

I'll try to get pictures... just not sure I should have this sitting around. Make a legit offer and I'll run middle man to make it happen (obviously not a forum member selling it).

So... have it all in my possesion now. Figure at worst it sits on the shelf for another project. Came with what looks like a complete Jackson Racing Water Injection (liquid intercooling) kit. Also a Bipes... and some unknown map/boost sensor (part of the bipes?) + an RC injector in the m45 adapter/bypass unit... one time e-cool unit?

I'll accept offers on it all though :p
Pics of the goodies!
http://i295.photobucket.com/albums/m...e/DSCF0117.jpg
http://i295.photobucket.com/albums/m...e/DSCF0118.jpg
JR WI pump/solenoid all in one
http://i295.photobucket.com/albums/m...e/DSCF0119.jpg
Jackson Racing Powercard
http://i295.photobucket.com/albums/m...e/DSCF0121.jpg
RC injector for e-cool or some other 5th injector system?
http://i295.photobucket.com/albums/m...e/DSCF0122.jpg
Can see water injection nozzle here...
http://i295.photobucket.com/albums/m...e/DSCF0123.jpg
Bipes
http://i295.photobucket.com/albums/m...e/DSCF0125.jpg
More of SC and components
http://i295.photobucket.com/albums/m...e/DSCF0126.jpg
Inside it
http://i295.photobucket.com/albums/m...e/DSCF0127.jpg
Big Throttle body
http://i295.photobucket.com/albums/m...e/DSCF0133.jpg
Small nose pulley (big boost kit?)
http://i295.photobucket.com/albums/m...e/DSCF0130.jpg
Pullies/brackets everywhere!
http://i295.photobucket.com/albums/m...e/DSCF0131.jpg

So fun... if someone makes a good offer I won't sit on it. :p

Put it in a museum :)

On someones car would be a better place :p

looks like it has some custom bracketry which should partially solve the squeal mentioned above.

Also that JR WI pump is a rebranded Aquamist race pump, infact it's probably a 1s ki they're very very good.

You should buy a 1.8 and fit it ;)

I have more unconventional and higher HP plans for the miata I got. Up the stuff goes.

https://www.miataturbo.net/forum/t35099/