boosted

The choice is mine I suppose, the advantage of tuning it myself and having the two turbos is that I can choose between them and swap them over very easily.
Remember this is a TD05 20g not a TD06 20g. It's almost like a "19g" if you like, the compressor wheel is 20g sized (inducer and exducer) but it has a TD05 turbine wheel and 7cm housing (unlike the TD06's 8cm and bigger wheel) in comparison an 18g has the same exhaust wheel and housing as me, but the compressor inducer is slightly smaller, the exducer on the 18g is the same as my 20g and the bigger 20g.
So my turbo lys between an 18g and a big 20g.
Spool will be similar to an 18g and power will be similar to 18g maybe a bit more. I say 360 hp but that is a conservative estimate, it may well make more, however I doubt it will do 380.
A 16g, as good as it is, just won't flow the air, peak power suffers as the air is super heated and the turbo cannot maintain the boost level required, rev limit is also lower.
With my forged rods I have no problem with an increase in rev limit to sacrifice a couple hundred RPM spool.
My 16g makes 1.5 bar at 3200
My 05 20g used to make 1.3 bar at 3600, albeit with tubular headers, so I expect full boost (a higher boost of 1.5-1.6 bar) t around the same 3600rpm with my ported std manifold. I aim to maintain this boost to the limiter, this is where the power is made with a bigger turbo, sustained high boost, at a lower temp.
Also plan on messing around with methanol as an additive, initially as a safeguard and latterly I will put timing in for more power. I have the ability to have map switching on my ecu, so will run two maps, meth and std fuel.... But this will be a while yet!

Linksfahrer

Hi Boosted

Over on my Thread (General Tech), for WRX engine Recon Choice
I can post pictures coming in from Andy at wmsracing on the Sti bottom end build he's doing for me. Its also a 2.0 we could have a look how your TD05 20G compares to my TD05 16G, I won't be done till Summer but a R&R graph will be interesting.

Doing anything on your heads , just a clean up / lap the valves ?

boosted

Yes should be interesting, I am currently running a 16g at 1.45 bar, no RR printout however.
But I would like to dyno my car with the new engine/turbo setup to see how it fairs. Only problem is not many RR's local, dragstrip is probably the best comparison for me, I will run both 16g and 20g this year and compare times.
RE heads, nope just bolting them on.
If the valves come out then your looking at valve stem seals and a re shim, especially if your lapping them.
I don't lap valves ever, not even new ones unless I have a major pitting problem.

ScottyPPP

Bring it down to Surrey Rolling Road.

I need to stick mine back on now it's tuned properly and see what it makes. Should be 340 at least and 330+ lbs ft.

boosted

Only a 1000 mile round trip! 🚙🔥🔥🔥🔥

ScottyPPP

From Harlow? Or is that not your location?

boosted

Born there, not living there since 1988

ScottyPPP

Location just a bit out of date then

boosted

Or I don't want people knowing where I am

Linksfahrer

Well that won't be a problem for me, Mid May I over in UK.

Simon wanted me to come back over to finish it off properly anyway and I can think of no better place to go to get my RR cuvre.

Linksfahrer

boosted

You can take the boy out of Essex but you can't take the Essex out the boy!

joz8968

iTrader: (13)

St John's Hospital? (That's where I was fired into this goddam awful world lol ).

Linksfahrer

YEP St Johns , I heard its been pulled down ?
My cousin still lives in Moulsham street.

Linksfahrer

I just did some trawling of the net , looking at D-series.org and some good info on Turbo flow maps are you by any way also "boosted91" ? from here http://www.d-series.org/forums/archi...g-dummies.html Its a great read , I worked out that Im going to have a heat problem over 21.5 psi and reckon I ll only make 336 hp after the calculations. You however will be way up over 380 hp . Have fun playing with the calcs . Ralph

boosted

Ha no that's not me!
Remember you don't even have a "big 16g" yours is a small 16g.
The big 16g is found on evo's and DSM's
Compressor maps are a good way of working out appropriate turbo sizing and how efficient the turbo will be running.

boosted

Linksfahrer use this to work out cfm;
http://www.boosttown.com/forced_induction/air_amount_calculator.php

ScottyPPP

I would assume up north somewhere going by the distance.

joz8968

iTrader: (13)

Yeah, I literally just read on the net that it was demolished in the latter half of 2013. Didn't realise.

Ha, good ol' Moulsham Street - used to frequent it a lot back in the early 90s.

Linksfahrer

http://www.cxracing.com/mm5/merchant...gory_Code=TD05

My Turbo code TRB (B) big came in a kit together with the large TMIC
but Throw the MBC away ( it cost me my bottom end. )

The special $ Turbo kit & TMIC is no longer available but separately

Intercooler+Y Pipe Kit For SUBARU WRX/STI 02-07
Item Code: KIT-WRX-Y-P-IC004-A

but the turbo is sol also in the FMIC kit TD05 Big 16G Turbo and Front Mount Intercooler Upgrade Kit
Item Code: TRB-KIT-WRX0207-BOV017-CT-IC0058-KIT

In the link I sent you also will find a calculator for the CFM was also listed,
I did the calcs all through to come out with 336 bhp for mine, (threory)
yours will run a lot cooler , I think >400 bhp is possible
a bit over 380 is probably where you are at 21 psi.

Ralph

boosted

Quite, but on what fuel? You must ask yourself!

boosted

I went to Chelmsford college 2000-2001. Too end of moulsham street.

Linksfahrer

Quite, but on what fuel? You must ask yourself!

You will be able to go even further twin mapped with Methanol , Im also twin mapped for 98 at the moment at 1.2 bar but can run 1.45 bar with 102 octan for a bit of safety.

I calculated the 336bhp on 90% effiecent , but turbo's are probably a bit better as you know , a theoretical flow of 550 CFM on the TD05 B 16G is however never going to be a good idea for my car , the heat generated is a problem. The PR will have to be about 2.2 and even that's 21.5 psi. So Im never getting over 68% on the graph. Yours will be at 76% , so a lot less heat , = more latitude for more power . Seems to me the 20g is an ideal cheap turbo ( <$300 on CX race site ) for drag strip use , where you hold the revs up beforea green light , however for road use about town , its got to spin up first not my cup of tea, neither particulary is the turbo I have or the huge TMIC the small 16G is better for spool and the smaller internal volume of say an Sti V8 TMIC might be better for a good around town drive. I will test that idea with a quick swap back to the much smaller WRX one. ahh problems problems. First one is get the engine back in.

mickywrx

iTrader: (29)

Graph from the last time mine was on a dyno, TD05-16g.



Boost, AFR's and stuff.

boosted

Nice power. Could do with a tune to sort the AFR, 10.2:1 is a bit rich lol! In fact it's in the tens all the way in boost, I would think 11.5:1 would be better for it, make even more power! 👍

Linksfahrer

Yeah , 330 is fine , for 1 bar boost . Actually quiet surprising . Id like that.

boosted

That's where the turbo is happy! More boost, more heat, less timing, not much more power 👍

Linksfahrer

Still ok for 1 bar though , maybe still hope for mine yet

The problem for 16G here still is the roll off after 6500.
Dytch has that covered above Heads / flow / Larger Turbo etc etc.

joz8968

iTrader: (13)

Small world and all that...

Linksfahrer

Too end of Moulsham street
I find I never get to the end ,

I always stop at the Cricketer's on the 9 crawl