GingerNinja
My turbo bus needs a few small upgrades but they're all connected so I'm thinking about doing everything at once. The limit here is going to be daily drive duties on LH2.2 with M46 and probably skinny rods (it's an 89 but I haven't had a look). Down the track the gearbox and rods will be swapped for something stronger but I can't see myself upgrading to another ECU for a while. Probably a bit boring but there it is.
Turbo - was thinking about something in the 15G or 16T range. Unless it's worth getting something like a used Garrett 2871 or similar. Any recommendations?
90+ manifold
3" dump pipe with bung for AFR guage. It already has a 3" exhaust system but with the stock dump.
Intercooler and piping - 2.5" pipes and a decently sized intercooler but mount it further up front. 3" seems overkill for this considering the throttle body is only 2"?
What's a comfortable build for LH2.2 to handle? I'm happy to turn the boost down a bit until I get a proper gearbox.
Slowbrick
There are about 2 other guys other than yourself who I know who have "modded" LH2.2 turbo builds. Myself and Alex.
I daily my car everyday and it provides a good mix of fun and reliability *sort of* lol.
Im running a B230FX+T with LH2.2 and while I havent had it dynoed its definitely quicker than a stock 740 turbo and really pushes you back in your seat when you get it singing. My mods are:
15g turbo on a ported 90+.
KG2T cam in a 531 head.
Full 3 inch exhaust with a 2.5 inch dump (probably get this fixed in the future)
Bosch 044 fuel pump and 740 turbo intank pump.
Ebay intercooler with 2.75 inch piping.
10psi.
Its a ton of fun and still returns decent fuel consumption figures. I could probably go for 15psi with larger injectors but at 10psi im happy with it and dont feel like its underpowered or really needs more.
Vee_Que
They can handle a bit om stock power, I'm about to find out with jays 740t by putting on a t3/4 but he has a chip in the ignition and ecu.
I personally get shit economy. Ive given up on trying to improve it with lh 2.2, combined with a locking diff and high stall auto.
16t with a ported manifold is worth doing and stock injectors handle it fine up to 15psi with one of my intercoolers fitted. Makes 135rwkw through the Auto, jays car with a td05 14t makes 160rwkw but past a normal rev limit. Both have full 3" exhausts and ipd cams. Jay has a wideband on his and it doesn't lean out in boost, so they aren't that bad for fueling stock.
GingerNinja
Thanks, this helps a lot. The car is currently running a 12b turbo at 12psi with 531 and an A cam and it's a good setup for daily driving but the turbo seems to be playing up and I'm not that excited about spending money on it. Hence the shopping list above.
Tree
Isn't there a chip for LH 2.2? or only on the LH2.4?
GingerNinja
I think there's a bloke on Turbobricks that sells chips for LH2.2, or at least he used to.
Slowbrick
Yeh his name was Fred. Not sure if he is still around. I think a guy on there called stabbs was doing them too.
Vee_Que
The one jay has doesn't improve much in power we noticed.
GingerNinja
So which 15G or 16T should I be looking for? Is there a particular one that's a better design? easier to re-clock and swap oil and water lines? or to chop up for a 3" dump pipe?
Vee_Que
Both will need the lines fiddled with to fit. The oil drain will need to be cut and a hose used as a flexi in the middle. I made the stock oil feed fit, but I have a flexible braided line which would have done the job better.
The conical 16t flows the best, but the flange is not straight out. You will need to port the wastegate too.
If you have a 90+ manifold already i have one that is milled already to exchange.
deleted_user_160
The chip I have was removed a short time after i put it in. As I didn't like the hesitation/flat spot at 2500rpm although after the hesitation it was noticeably different, I didn't have the wideband then and did have ping issues.
The late ECM in my car is nicer.
I posted 160.8rwkw with detonation due to nasty cylinder 2. With factory cooler at 16psi.
If I was to go to the Dyno now, I would post a decent amount more. Thanks to a head that's now all fixed. :D
Vee_Que
The max power was well past a sane level of rpms for the engine. So if you only rev to 7 it won't make that much more for now.
deleted_user_160
We will see on the next Dyno. After the install of the t3 adjustable fpr etc.
Vee_Que
Bigger injectors. No need for an adjustable fpr...
Slowbrick
Bluetops and a 4bar fpr should net you some nice increases that dont mess with the AMM
deleted_user_160
If my 444cc are a bit much when I can make the difference with what I have in. If I lean out with 375cc @4bar I'll put the 444cc in
GingerNinja
I have V70T red injectors in the car now. Google says these are around 315cc. Hopefully these will be enough to cover the basics?
I don't have a 90+ manifold but I'll start looking around for one, along with a decent 16T.
What size front mount intercooler can you fit in the front of a 240? I'll be moving it up front, not in the stock location. Can you go too big with your intercooler if you're using a small turbo?
Anthony
GingerNinja;52718 wrote
Snips...
What size front mount intercooler can you fit in the front of a 240? I'll be moving it up front, not in the stock location. Can you go too big with your intercooler if you're using a small turbo?
A 3" (75mm) thick core is the ultimate, but 2" using a larger width and height is good too.
If you go thicker than std, then you don't need to go as big overall in w x h.
LH2.2 doesn't allow much wriggle room with injector size and cams, so in the meantime good charge cooling is a good move.
nickm
I think that it is about the lh2.2 maps and that it does not adapt. They present it's limitations.
Guessing with enough dyno time and a way to easily change maps you could tune it for larger injectors.
Vee_Que
Going to high impedence injectors is good if you don't have the resistor pack.