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AnsweredHot!Stuka’s 1990 GT Turbo - Targa Tasmania Prep

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B24
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Re: 2016/09/09 10:07:25 (permalink)
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Yes another adventure! Good to see it was all discovered at home and not 1000km away

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#76
stuka
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Re: 2016/09/09 12:59:40 (permalink)
+1 (1)
I think the term luck of the tasmaniacs is more appropriate!
#77
kameleon
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Re: 2016/09/11 10:39:19 (permalink)
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It is amazing how many small problems you can find on something that seems to be running fine at the time.
 
Good idea with the time serts, i have had helicoils fail on 3S heads before.
#78

stuka
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Re: 2016/09/11 19:49:15 (permalink)
+1 (1)
Yes I was very surprised, just shows how well these cars are built.
 
The timeserts were great, took about 45 minutes to do the first one but then each after that took about 5 minutes.
 
When it came to firing up the car for the first time after I had filled all the fluids, checked wiring, earths etc but the car would not start. I then went about checking the obvious stuff like fuel, spark etc but no obvious signs. I decided to change spark plugs as they did look a bit ordinary but that made no difference either. It was then that I realised that 2 of the spark plugs had no signs of petrol on them so I pinged the injectors and discovered two of them were not pulsing.
 
I checked the wiring and ECU and had established that I was satisfied with all that so it was time to reluctantly remove the fuel rail and injectors. I say reluctantly as they are ok to get out but are a real PITA to get back in. I had the injectors tested on a rig and their delivery rates were all over the place and inconsistent. Following a recommendation from the tester and Injector Dynamics I decided to buy new injectors, E85 is not kind on injectors if left sitting for a while. Luckily Injector Dynamics gave me a good discount on a new set.
 
So it took 6 months to rectify all these issue due to the stop-start nature of everything. If I had known what the issues were and the parts I needed upfront it would only have taken a couple of months and considerably less bad language!
 
I was hoping to rebuild a gearbox and fit a Kaaz LSD but that has gone by the wayside, hopefully I will have this aspect sorted before MTC 2017.
#79
stuka
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Re: 2016/09/26 12:31:35 (permalink)
+1 (1)
So after this sorry saga which at times has been very draining and demotivating at times, here is a list of the things done to the car over the last few months:
 
-Aftermarket side entry inlet manifold (I was picking up 20 degrees between intercooler and throttle body on the previous side feed)
-Aftermarket exhaust manifold, dump pipe and single exit exhaust
-Garrett GT3071 turbo, 0.63 A/R with external wastegate and screamer pipe
-Intercooler pipework and cold air feed from passenger side vent
-Adjusted valve clearances to specification
-Replaced timing belt, tensioner and idler pulley
 
I had the car tuned just over a week ago and it made just a shade under 250wkW which is pretty impressive for a stock motor (with some porting/polishing to the inlet ports). I have said for a number of years now that this is the best turbo for the 3SGTE. Response if great so overall very happy. The car needs to go back for some more tuning and I think there may be a little more in it, maybe another 10kW
#80
Carmikey
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Re: 2016/09/26 13:22:19 (permalink)
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Very nice turbo Pat, the GT3071 is definitely a great charger.
#81
MCT_MR2
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Re: 2016/09/26 22:03:00 (permalink)
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Awesome work pat. I'd imagine it would be quite aggressive with the .64 rear housing.

'88 MR2 4AGTE W/ EFR6258

224.6KW @ 20PSI

more to come......
#82
stuka
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Re: 2016/09/27 12:01:37 (permalink)
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Yes the housing is the pick off the bunch, response is similar to the steel wheel CT26. I have tried the larger one in the past and didnt really like the response, although for a circuit car the larger housing may be better suited as you are often in the higher RPM range. Dyno plot below, note there is more tuning required, this was tuned without a knock box or RPM signal so on the conservative side
 

#83
stuka
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Re: 2016/09/27 12:03:25 (permalink)
+3 (3)
Finished engine bay
 

#84
Carmikey
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Re: 2016/09/27 13:21:51 (permalink)
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Wow pat, that engine bay is looking really nice now... clean & all!
#85
robk
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Re: 2016/09/27 14:52:23 (permalink)
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Very nice. Looks like you've used lots of parts from your old red car?

There is an extensive build thread for my car here: http://www.mr2australia.com/mr2play/tm.aspx?m=18316
#86
stuka
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Re: 2016/09/27 19:18:01 (permalink)
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Yes Rob its all the red car bits minus the engine, I have some plans for that engine a bit later on  Responsible recycling!
#87
B24
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Re: 2016/09/27 20:03:21 (permalink)
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Looks pretty serious Pat

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#88
Eric
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Re: 2016/09/28 09:33:19 (permalink)
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Very Impressive!

Did you fit A/C for the drive to wake field next year?

1990 SW20 Hardtop - Supercharged 2GR-FZE
#89
stuka
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Re: 2016/09/28 12:08:37 (permalink)
+2 (2)
A/C is for pussies Eric, alternators are far more important!
 
I have been tuning the 3SGTE for a number of years now in various configurations, the graph below shows the results. I will generate a similar graph for torque when I convert the data.
 

post edited by stuka - 2016/09/28 13:12:10
#90
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