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 1060 Posts Member #: 588 Post Whore Delaware, USA |
31st Aug, 2007 at 01:02:21am
Once I stiffened up the overboost valve I found the missing power. However I still hear it sometimes and suspect it may still be a factor, maybe a proper dump valve is in order here... So got down to my local dragstrip (I-295 in Delaware!!) with a G-force meter and here's the times..
Edited by Turbo Tel on 10th Mar, 2008. website:- http://www.terryhunt.co.uk
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 3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
31st Aug, 2007 at 12:43:32pm
I am probably the only one that doesn't know, but what cc is this motor? http://www.twin-turbo.co.uk
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1060 Posts Member #: 588 Post Whore Delaware, USA |
31st Aug, 2007 at 12:46:23pm
website:- http://www.terryhunt.co.uk
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Forum Mod 10979 Posts Member #: 17 ***16*** SouthPark, Colorado |
31st Aug, 2007 at 01:45:48pm
Which GT15 is it???
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
31st Aug, 2007 at 01:59:00pm
On 31st of Aug, 2007 at 01:45pm TurboDave said:
http://www.turbobygarrett.com/turbobygarre...48_466755_3.htm Reason i ask - is becuase the last one seems to be almost identical to a T2, except with a larger 60-trim IIRC. Its the last one, a 1548 which has T25 flange. I bought it new -- under $500 at the time. website:- http://www.terryhunt.co.uk
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Forum Mod 10979 Posts Member #: 17 ***16*** SouthPark, Colorado |
31st Aug, 2007 at 02:17:05pm
Well, I know that I got stonking results for such a small turbo; in fact mine was a 50-trim, not the 60 that this is....
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
31st Aug, 2007 at 02:27:02pm
On 31st of Aug, 2007 at 02:17pm TurboDave said:
I think you should stop pussyfooting around, get an intercooler on there, and get it boosting upto 15psi. low 14-second passes for sure!!! I'm working on it!! I dunno If I want to go to 15psi though maybe 12 ---- I've turned into a real pussy since blowing those pistons.. It still has Journal bearings, not ballbearing but I think the overall design is more efficient. Given that I was always going for a road car I'm pretty happy with the results so far.. Edited by Turbo Tel on 31st Aug, 2007. website:- http://www.terryhunt.co.uk
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Forum Mod 10979 Posts Member #: 17 ***16*** SouthPark, Colorado |
31st Aug, 2007 at 02:45:57pm
I know it has journal bearings, but these are still way better than the t-series bearings...
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
19th Apr, 2008 at 05:36:12pm
Just found some new info on the GT1548 flanges for anyone thinking of going this route.. I still recon this turbo is a perfect match for a road car. I am just waiting for a few bits and it will be on the road again in the next few weeks, slightly lower CR (8.6) and Forged pistons this time. Also gone to a 2.95 diff. I was easily cracking the 16sec 1/4 and had a 7.6s 0-60 with the IC so looking forward to upping the boost once its setled down..
Edited by Turbo Tel on 19th Apr, 2008. website:- http://www.terryhunt.co.uk
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 152 Posts Member #: 2190 Advanced Member South Carolina, USA |
21st Jan, 2009 at 04:11:32am
Hey Terry (or anyone that has a GT1548) -- I was just wondering if you still like the GT1548 or if you would recommend something different. I am about to drop some coin on it, want to make sure I get something that will work.
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 1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
21st Jan, 2009 at 04:20:03am
I will soon be running a GT1544. It's got a much smaller compressor A/R than the GT1548. Probably a little on the small side but I only plan to run about 10PSI and i am not aiming for high HP. Also, it's only oil cooled as it's used mostly on VAG diesels. The GT1548 seems to be the closest thing to a T2 in te GT range My engine is a 1098 aswell On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse  On 30th Apr, 2010 Rod S said:
Gary's description is best |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
22nd Jan, 2009 at 03:40:59am
On 21st Jan, 2009 Mikes1098 said:
Hey Terry (or anyone that has a GT1548) -- I was just wondering if you still like the GT1548 or if you would recommend something different. I am about to drop some coin on it, want to make sure I get something that will work. Thanks I still rate the 1548 and would absolutely reccomend it.. Looking at the specs its smack on for the 1275 engine and makes a great daily driver.. lag is not a problem at all and I dont see a lack of power at 10-12psi when compared to other turbo's.. but as I have always said not sure how it would keep up if pushed with higher boost levels. Also the 1548 uses a T2 flange and I suspect the other GT15s use something else (3 bolts??) so its just easier to install (mirage? you will have to check) Since I built mine ATP turbo have started selling an outlet flange, a bit pricy but at least available, I had to make mine. Since posting this I went to the Accralites and 8.5 CR, I also posted the dyno results at 10psi, http://www.turbominis.com/forums/index.php?p=vt&tid=228375 109 nanas at the wheels, not bad. Terry Edited by Turbo Tel on 22nd Jan, 2009. website:- http://www.terryhunt.co.uk
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
22nd Jan, 2009 at 09:39:40am
Hi Tel,
AlexF |
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd Jan, 2009 at 11:08:06am
On 22nd Jan, 2009 AlexF2003 said:
Hi Tel, Are you suffering alot if Det at fully throttle past 5k rpm? What are you EGTs like with those timing figures at the top end? Alex 20 deg of advance at 12psi at 5k dosen't sound like a lot of advance to me. even at 8psi it's only 24deg. What you on about boy?????? Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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315 Posts Member #: 3013 Senior Member Epsom Surrey |
22nd Jan, 2009 at 12:07:30pm
when u ran 10psi and got 109 nanas were u running a intercoller or not??
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
22nd Jan, 2009 at 12:09:14pm
On 22nd Jan, 2009 wil_h said:
20 deg of advance at 12psi at 5k dosen't sound like a lot of advance to me. even at 8psi it's only 24deg. What you on about boy?????? Didn't Tel kill a cople of sets of pistons though? Maybe he is referring to that. Oh, and the other GT15s do use a 3 bolt flange On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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 6743 Posts Member #: 828 Post Whore uranus |
22nd Jan, 2009 at 12:10:13pm
no intercooler will requre a lower amount of advance wil you numpty Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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315 Posts Member #: 3013 Senior Member Epsom Surrey |
22nd Jan, 2009 at 12:24:20pm
i ran 6 psi through a intercooler on a 1293 with a t2 off a uno!! and 1.5 rockers with a 266 and made 107 nanas
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
22nd Jan, 2009 at 12:48:27pm
What I mean is I am surprised how little advance he's running
AlexF |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
23rd Jan, 2009 at 02:56:42am
On 22nd Jan, 2009 AlexF2003 said:
What I mean is I am surprised how little advance he's running On my 1275cc donkey engine I run approx 28 derees on 10psi with no IC at 6k.... No det on Vpower and EGTs are safe.... Alex well... after taking out 2 sets of cast pistons I erred on the safe side to say the least..... I never did take the advance all the way up to find where the power started dropping, no balls.. and I have not measured the EGT's The post above was before I built the final engine using the forged pistons, IC and 8.5 CR. For the R/R session where I got 109 nanas I think ended up with 24 degrees advance, and was not aware of any det. I even backed it off a couple of degrees for road use to be safe. I did sometimes wonder if the smaller more efficient turbo made detonation more likely, at the time others using regular turbos were also loosing lands so not sure if that was a factor. I'm actually thinking of doing another R/R session this spring, since that run I have really dialled in the AFR and wonder if It will run a bit quicker, I'm also a bit more confident now I have had no piston failures for a whole year so feel confident enough to push the timing a bit more, maybe a couple extra psi as well?? I have found another R/R near me that seem a bit more Hi-tech and definitely more turbo savvy as they specialise in Subarus. Terry Edited by Turbo Tel on 23rd Jan, 2009. website:- http://www.terryhunt.co.uk
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
23rd Jan, 2009 at 07:45:48am
the cr you are running you can run 26 deg safely even upto 20 psi ish, ask if the rr guy has a set of det cans to use to check.
always looking for them bigger bunches of bannanas |
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 6274 Posts Member #: 509 Post Whore Isle of Man |
2nd Oct, 2009 at 01:40:59pm
what gt1544 are you gonna use garry, one off the tdi megane?
"Turbo's make torque, and torque makes fun"
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
2nd Oct, 2009 at 02:12:39pm
Joey, I'm using a GT1544S (S just means "different" according to Garretts suffix list). It is used on alot of the smaller VAG TDIs such as the 1.4s and the low power 1.9s. I know they are fitted to the AMF engine and there are a few others I found (AAU springs to mind but I'll have to check up on that). I am still convinced that I have chosen the best garrett turbo for my application. The compressor will be operating in the middle of the peak efficiency island so I'm eager to see what results it brings On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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 1346 Posts Member #: 2340 Post Whore Dublin Ireland |
2nd Oct, 2009 at 02:21:23pm
On 2nd Oct, 2009 GaryOS said:
I'm eager to see what results it brings Thats just a lie On 17th Feb, 2009 Rob H said:
I find the easiest way is to super glue the bolt to the end of one of my fingers. ______________________________________________________ |
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
2nd Oct, 2009 at 02:28:02pm
On 2nd Oct, 2009 PaulH said:
On 2nd Oct, 2009 GaryOS said:
I'm eager to see what results it brings Thats just a lie hahaha, you are correct. There was a stage where I really was enthusiastic about it and there was a danger of re-sparking my interest when I checked the compressor map. It will eventually make good figures. I still fucking hate the car though. I hope it gets stolen or set on fire. I have wasted 3 years of my life On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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