Nothing wrong with your skills old bean. Turbo's are too easy of a power adder. Making a mini 4wd, or spaceframe, that is complicated. Turbo's are just something bolted to the exhaust manifold. You don't need to understand compressor maps, dynamic compression, or ignition advance particually. A GT17 on 8.5:1 CR, intercooler, and locked ignition at 25 deg will make 150hp all day long with anything over 15lb of boost. Mapped ignition will make it nicer, EFI, nicer again. But it's still just an A-series!

//www.youtube.com/watch?v=U81_0waqEWA

 

Totally agree Dave.  Wasn't bashing FI at all, I look forward to doing it myself after my skills improve.

For every one thread you can find and post like that, I'll post ten that don't end up that way.

Turbo's do not make engines unreliable; a 140hp turbo engine will almost always last a lot longer, be more refined, and be longer lasting than a 140hp nat-asp engine. Simple fact is that folks don't stop at the peasly measly 85hp that most ever get to with their 286 cam'd nat-asp engine, but target, and often achieve close to double this figure. Eventually, when pursuing power that is two to three times the factory nat-asp figure, sh1t happens...

 

These things do work, as Ben's sig says he got 125.7HP ATW from his 1152 motor. But he had a pretty big turbo on it. Firewall was uncut.
He has sold quite a few of these kits. I got the original flanges cut for him.

re the turbo over flywheel housing, we did one of those beforehand. It worked OK but the pipework was more tricky and heat was a problem too.

 

Yeah of course you guys are both right, my point to Jemal is you'll go to Turbominis or 16vminis and read an incredible 20 page build thread with fabulous info and engineering.   And then at the end the guy always says sorry - it blew up,  I'll start another build thread when my other block comes back from media blasting.

 

Well hold on now... not sure Turbo's are the problem as much as the quest for more... and more... maybe I can squeeze another hp out.. bang... 

The red engine with the supercharger is the one I built for my friend Dwight up in the Portland area.  Jeremy has featured it in a couple of videos for Jet Motors. It is in the Green Woody 62 Traveller that won best of show at the Portland All British Field Meet a year or two ago.

I took that photo on a pallet right here at Mini Mania, and have seen that photo used for all sorts of purposes! It pops up in google images!

I still prefer naturally aspirated engines with only three main bearings!  Like my good friend Air told me... Most of these lovely threads about Turbo kits and such usually end with "yeah, it blew up"!!

Air2Air, I didn't want to post any pictures yet as I am not "done" yet, but I am very close. I hope to wrap up the SC12 install this week, time/health permitting. I am very excited, while obviously not as efficeint as a turbo, etc, I wanted something "bolt-on", "cheapish", kinda different, torque down low... This fit all the criteria I needed. I think these as well kinda top out around 130-150ish? I know on a 1275 with a 12psi pulley it dynoed around 130bhp. I would like to revisit a turbo though in the future, but for now, and hopefully years to come I will perfect this setup. Maybe this summer I will add water/meth to it.

Have a look at the pictures here: //www.turbominis.co.uk/forums/index.php?p=vt&tid=288004&fr=125 (go down the page to the Oct 2104 post). Paul S has done a lot of work on simulations to come up with the best setup. And long branches with small tubes make a significant contribution to power.

And he's also been using EFI for quite a while. That's why you see the AFR sampling chambers and EGT probes in one of the pictures. You need to monitor AFR on the inner and outer cylinders to adjust injection timing and you can't put the sensors before the turbo because they don't like heat and pressure.

how do these match up to a turbo sys.?

http://youtu.be/Byuf_G9JhJg

There have been quite a few "home brew" turbo over clutch housing versions over the years on Turbominis.

This one from Jet looks like a nicely fabricated manifold. Looks like a GT1544 so based on the flange. //turbobygarrett.com/turbobygarrett/turbocharger#GT1544

I am surprised by this choice if that's what it is, as it's limited to 120 hp peak. That said, it'll pick up and dance from about 1400rpm at a guess.

This does look to have the turbo hugging the engine, so I am going to suggest that this one has been engineered to fit without bulhead mods. You might choose to pull the engine 1/2" forwards like all minis were after the SPi was intrroduced to make things easier, but it is probably being engineered to not need it.

I'll guess that this manifold and downpipe are going to be no less than $600, given the material, and number of welds, and the development that has gone into them.

The carb obviously needs a plenum; so either find a used one on ebay UK, or that'll be another $150 for a custom. Estimate $500 for a GT12.

Need an EFI style high pressure fuel pump, fuel hoses, and a regulator to go with this too. You can use a SPi or MPi tank to good effect.

 

This setup does look pretty cool. I personally would have looked at using a GT1548, or GT17, but space may be the big driver here. A 120hp turbo mini will be a LOT nicer to drive, and make bags more torque than a 120hp nat asp mini for sure, and with this turbo would have a very nice power delivery, almost supercharger esq.

 

I think it was the Janspeed kits that had the turbo over teh clutch housing, and they had LOTS of 'nanas.
Seven (I think) did a kit with a suck-though Weber mounted across the bulkhead, saw one at an MME once.

www.turbominis.co.uk is the place to go for forced induction information.  There isn't a lot they haven't tried.

 

Interesting John, I admire the amount of time you put in there.  Lotsa room for the HI44.  I don't think I've seen one on the side yet.  I can see why you want to pause and take a mental break before doing the intake!

And thanks for your seat mounts, really great stuff.

 

I just saw this yesterday for the first time on Jets FB page and have been following. When I was going down the turbo path I somehow convinced myself to do a side mount location, IE over clutch housing. But I wussed out and now I am almost done building my MR2 supercharger suck through setup. Regardless I always like to see stuff like this developed, kinda like the SC direct injection.

There was someone selling manifolds on the Turbomini forum that did not require modifying the firewall. I believe they were all spoken for sometime ago.

Terry

Shiny!

But, how do you connect the turbo outlet to the carburetor inlet? Those parts are missing from the photos and that aspect seems like a kind of a significant part (bodyshell clearance-wise).

Norm

Would think some kind of a heat shield would be necessary to avoid fuel getting hot in the carb.

 

But I bet that's going to be a Hot setup!

 

SirCoop

//www.ausmini.com/forums/viewtopic.php?f=2&t=87786&p=959916&hilit=turbo+manifold#p959916

And Matt the MiniMan has replied on the thread

 

Years ago the user "FortFun" did a rear mounted turbo that supposedly worked nicely and did not have as complex plumbing at the bulkhead where space is limited.