998 Turbo manifold help
Turbo Mini Forums

Hi all, I'm new to the forum. I know this is a well-trodden conversation from the quick search I have done but time moves on and so I'll see what answers I get.

I am currently removing my 998 engine for a refurb. I've purchased a 12G295 head (which I need to completely re-furb) a T2 turbo, metro turbo carb, plenum, inlet manifold powerspark Metro turbo dizzy. Also a Metro turbo manifold... I'm currently thinking I need a mirage manifold. The turbo manifold doesn't match the T2 screw holes firstly and secondly I'm now not convinced I want to start hacking the bulkhead.

Does anyone on here know where I can get a mirage manifold? I actually phoned the old company this morning that used to make them, they stopped when the previous owner moved on.

I’ve seen the fusionfabs now do a version. Any other ideas on how I could fit the T2 without having to cut the bulkhead? Hopefully without having to spend £400?
Any advice appreciated.
PS I’m sure this may be the first of many ‘can you help’ questions on the adventure
Thanks, Scott.

There's no magic answer as far as I am aware.

You could get it all fitted and see if you can perhaps squeeze an angled adapter flange to convert it to T2 that angles it in closer to the block. Might have to put the oil return into the gearbox though and a couple of adjustable steadies to push it forward.

Edited by jonny f on 7th Jan, 2019.

I'm sure Matt at fusion can sort you out definitely worth ringing him or emailing him.

Welcome to the forum

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

If you don’t want to cut the bulkhead, it’s a fusion kit or make your own.

Phil.

WWW.TURBO-MINI.COM

I've made my own successfully a few times using thick gauge stainless tube. This can be really cheap and work as long as you're handy with a mig welder.

Otherwise the Fusion Fabs stuff is really good and actually very good value.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

Thanks all for the responses. Not sure I feel confident enough to weld my own. Looks like there is good feedback on fusion though, so becoming the favoured option. Cheers, Scott.

T2 on a 998?

Yep T2 on a 998. That’s a comment to leave me hanging?

Quite a large, outdated turbo for a small engine! You'll probably be getting full boost at 4.5k or higher!

Edited by Steve220 on 10th Jan, 2019.

Though it’s old, the R5 spec T2 works quite well on a 998.

Phil.

WWW.TURBO-MINI.COM

Yep, depends what T2.

The R5 GT turbo T2 is the same as the later GT1548. Perfect for a 998, full boost from 3500 at the latest.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

i have just never seen any for sale. Do you know where you (i) can get one ?

If i have more toys than you when i die, I WIN

It's a R5 GT Turbo T2, hopefully should spool much quicker than a T3 (so I'm told), feeling slightly relieved from the above. I sourced it from ebay.

Hi I’ve been thinking it over and decided to chop the bulkhead. Was going to purchase from mini spares. Has anyone else used this one, there’s no info on gauge / thickness but seems good value? Thanks.

The bulkhead boxes seem to be a generic thing. I'd seam weld the whole thing though. When I bought mine many, many years ago one end had fallen off in the post !

Phil.

WWW.TURBO-MINI.COM

Will do, great advice. I wouldn’t want it coming apart once in. Thanks.

Cutting the bulkhead is not a good idea unless absolutely necessary. At one time there was no choice in manifolds and turbos, so cutting the bulkhead was the only option.

It's much better to not cut it. The box section across the engine bay is quite structural and better to leave complete.

Better to buy the manifold. Once you fitted the box, messed around with the heater, still had to spend money on a downpipe, it's only a few hundred more and a much better solution.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

Thanks Wil, puts me back on the fence again... I was thiking it would just give me much more space generally anyway and better airflow around the whole unit. I had imagined once welded is place it should be quite rigid again.

The box is not as good as the box section.

Also, if it helps, the metro manifold is also not really that good

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

It might not appear that good, but when you can make 230+hp using one is it really that much of an issue ? They’re relatively cheap to buy and almost indestructible. 😎

Phil.

WWW.TURBO-MINI.COM

http://www.jbperf.com/

Going a little off topic, I've never run one, but interested to know why a fusion one would be a better choice over the standard one? In terms of flow etc.

Edited by Turbo Phil on 17th Jan, 2019.

WWW.TURBO-MINI.COM

if u do go down the bulkhead box route i think i still have mine in the loft? Ill check to see if its there or if ive sold it (if your interested)

My point is that the Metro manifold is not that good, so why cut your car to bits to use it.

The 'log' manifolds are possibly no better, but fit without ruining the strength and originality of the car.

Plus with all the new MOT rules, better to keep it all as it was.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk