Eggenbeefburger Grp2 e21 BMW 320

[Hoobs]

Probably going to stick some acoustic mat on the inside to try and cut down on any resonating. Will see how it is first though.

[kipsy]

No resonating on mine. Bracket gone buy sound pad thing is a turd and I didn't bother- I'm not that fast to warrant a few grams

[Hoobs]

No resonating on mine.

I'm not that fast to warrant a few grams

Good stuff.

Me neither. I do want it to look good though. I'm kinda shallow like that.

[kipsy]

Put some lightweight door cards on- all out of sight. I'm not overly bothered with looks- more function etc. Rally cars always dirty etc.

[HairyScreech]

from those pics you still have the door trims on.
Might be worth pulling those of and sticking some plastic hole plugs in the holes.

i have been keeping this one quiet as it was a nice thing to know but what the hell...

A lot of the racing alternators are simply repainted nippon denso alternators that you can get from a small daihatsu/suzuki/toyota.

A copen alternator is 60A and about 3kg vs the standard 5kg.

(last post on this page)
http://www.rhocar.org/index.php?showtopic=21752

i mean seriously, look at the size of that thing!

[kipsy]

Good call ;)
Good saving on the front where it counts. May look into that one in the future but I need some juice when using the car in the dark as I've got a lamp pod with 4extra lights on the bonnet to power- great for circuit boys though

[Hoobs]

That's tiny. I imagine they're not too expensive either. Nice idea.

Shame I just bought a new OE one but I might see if a cheap one turns up on eBay?

[HairyScreech]

just had another thought, if you did go 2.8 then using m52 rods would knock 500grams off, the pistons probably lose about 60-120 grams of skirt between them and the crank webbs could be bobbed back to very little. (obviusly there are trade offs of going too light)

i would say 2kg could be saved from the internals with no real loss of function.

[redcar]

Hi,
What's the advantage of building a 2.8 stroker m20 compared to using an m52?

[HairyScreech]

If your racing in a class then a swap will often move you out of that class.
An m20 is more "proper"?

Not a great amount as they both weigh roughly the same and will both cost roughly the same for the same amount of power they are just different.
A 200hp ish m20 costs about as much as a m52 swap.
Pays your money you takes your choice.

[Demlotcrew]

from those pics you still have the door trims on.
Might be worth pulling those of and sticking some plastic hole plugs in the holes.

i have been keeping this one quiet as it was a nice thing to know but what the hell...

A lot of the racing alternators are simply repainted nippon denso alternators that you can get from a small daihatsu/suzuki/toyota.

A copen alternator is 60A and about 3kg vs the standard 5kg.

(last post on this page)
http://www.rhocar.org/index.php?showtopic=21752

i mean seriously, look at the size of that thing!

There is some nice information on light alternators here (power VS cost)

http://www.brise.co.uk/alternators.html

The old style alternators fitted to our cars are very very very heavy! The 95A one is 5.98kg!!!!!!

[HairyScreech]

Yes, next time i need an alternator it won't be a m20 one going back on.
Even on a road car the mass is significant and its a weight saving for no loss.

I have also noticed a few recent cars running about with some pretty light looking exhaust boxes, seems weight is becoming much more of a significant thing.

The brise alternators in that link that weigh 2.5kg are the Denso ones i mention above.
They are used in several oem applications and can be found that way for less than £100.

[Demlotcrew]

I completely agree, they are way too expensive, but its interesting to see how light the really high power ones are (compared to the OE ones fitted to even the larger BMW's).

I will most certainly be going for a denso very soon, just need to find one that will fit the engine.

[HairyScreech]

Probably have to be some kind of custom mount.
The pulley should be no problem as its either v or multi grove, both exist in the denso alterntors and alu pulleys are available as well.

[Demlotcrew]

Im already running four groove belts, with ali under drive pulleys. Im also running a lighter 65A alternator, but I could save about another 1.2kg!



The problem with the S14 is that it loves to destruct solidly mounted alternators. I would have to find one thats both light and strong, otherwise I would trade mass reduction for less reliability.

Andrew

[Hoobs]

Well while I've been sunning myself down here in Cornwall, the guys at Pristine have been getting my car ready for Crystal Palace this weekend and the latest job has been the 6 branch, I got from Theo.

We always knew the e36 rack would likely be an issue but it's actually the OE oil filter housing that's causing the biggest issue. The mod needed for the rack is pretty straightforward (so I'm being told) but we need to use a remote housing combined with some mods to the manifold. I'll try and get some pics but the problem now is time! We only have 2 days left to get the car finished and ready for www.motorsportatthepalace.co.uk so the pressure is on.

[Jhonno]

I thought you could just turn the housing or something for fitting a 6 branch?

[Hoobs]

I'm guessing the e36 rack stops that being possible?

I may simply have to postpone fitting the 6 branch till after Crystal Palace? I need my Milltek system to be joined anyway, so with limited time, we may struggle to get a slot with the exhaust guys. I'm driving back from Cornwall today, which leaves me tomorrow to run about before collect car Friday, so have just left it in the hands of the guys at Pristine. Me hassling them to find out what's happening won't help matters! I'm confident they'll be doing their utmost to get things finished.

[Jhonno]

I'm guessing the e36 rack stops that being possible.

Not sure.. Doesn't look like it would. Oil filter is right up by No.1 anyway.

[Theo]

Just rotate it 180 degrees Mark, you can see that's what I've done in that photo you posted. The rack will not interfere with this.

[Jhonno]

Just rotate it 180 degrees Mark, you can see that's what I've done in that photo you posted. The rack will not interfere with this.

Thought so..!

[Hoobs]

Evidently they tried that but the housing had to be modified to get it to fit. I'm not there myself so not sure what exactly? Anyway, they said it's done now.

[Hoobs]

Collect my car at lunchtime. Final job being done this morning is to fit the front splitter and timing strut for this weekends event.

Anyway, I'll get some pics up later and try and get a new dyno print-out now the 6 branch is fitted. I'll get it on the scales too, and hopefully it should be a lot closer to 970-980kgs, although now the cage is welded in and has door bars fitted so might not be as light as hoped.

[Demlotcrew]

Looking forward to seeing the results Mark

[Hoobs]

Just back from collecting my car and Pristine have done an excellent job. They really excelled themselves and I must admit, the mods have made much more difference than I was expecting.

Inside feels much more roomy and I'm able to get in and out much more easily.(I have a slight disability for those that don't know me) The Sparco removable boss is really good and well worth the effort.

The manifold has definitely made a difference but because its combined with less weight I won't know how much till I get on the dyno. I just never had time today. Its noticibly quicker though and feels pretty light on its feet now.

The SPA digital dash is great. It looks pretty trick too. I'm also well pleased with the front splitter. I went to a local industrial estate I know and there's improved front end grip. It feels awesome.

I am well happy with the whole car. I'll take more pics when I get time.

Crystal Palace tomorrow!

[HairyScreech]

There is a surprising amount of pressure at that bit of the front of the car to make use of, i am surprised more people don't take advantage of the benefits a splinter can give.
Even on a car running too high to make use of ground effect it will still help kill lift and clean the air flow up.
If you look at the group 5 and the imsa stuff its clear a lot more can be done with the shape in terms of aero than is common practice.

[Hoobs]

Brilliant fun at Crystal Palace today, with a 5th in class behind a 340bhp Dax Rush, an ex-McRae 6R4, a 'little Bertha' Viva & a Davrian. All of whom have been doing this for years. Quickest run was 42 seconds and the second run included a bit of a tank-slapper that I eventually saved.

Awesome venue, stunning weather and loads of great cars.

Doing it all again tomorrow!

[Demlotcrew]

[Hoobs]

Brilliant weekend.

Car was faultless.









E39 M5 V8 powered. Quick!

[Brian28]

[Demlotcrew]

Looking good, but It really needs the rest of the tech II kit to finish it off

[Hoobs]

Which consists of what? Funnily enough a chap at Crystal Palace offered me a complete kit for free.

[Demlotcrew]

Take it, sell it and buy a GRP copy! The original parts would weigh too much. Door pods, side skirts and rear bumper/valance.

[Hoobs]

It is a GRP one!

[Demlotcrew]

And you didnt take him up on the offer? I would have been obliged!