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Author Topic: Sunset Red 1.4 TSI(TFSI) GT Sport - daily drive & track car  (Read 343801 times)

Offline fuscobal

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #465 on: June 30, 2012, 06:47:28 am »
Hurdy, I don't think we can compare the 2. Yours and mine are the turbocharged & compressor 180HP version while rex's engine is the older turbocharged only 122HP version so they might have different compression indeed !
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Offline Hurdy

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #466 on: June 30, 2012, 07:58:02 am »
That is what I thought Fuscobal :happy2: and why I asked if he had any guidelines as to what the pressure should be when testing.
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Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #467 on: July 01, 2012, 09:36:29 am »
Took a look today with my mechanic in VW technical papers and it seems a difference of 3bar between cylinders is accepted !?!? That's quite weird so I read it 2 times to be sure !
Yup... that is strange...
During one test that shows the overall efficiency on all cylinders (compression, spark, fuel injection) one cylinder was at 70-75% and the software said it is only a "warning" not an "error". At times it would go below 70% and than the system would tell me that this behavior is not acceptable (but at times it would also go back to 100% on the same cylinder).


Any guidelines as to what pressure they should be running. I'm sure when I had mine tested they were 175-180psi = 12.4bar  but it may be that mine run a higher pressure than yours?

That is what I thought Fuscobal :happy2: and why I asked if he had any guidelines as to what the pressure should be when testing.
Unfortunately I found no guidelines to the absolute pressure. I only found the ratio value which is 10.1 for both our engines. I will visit my VW dealer to see his thoughts (he investigated a similar problem with a 170bhp twincharged 1.4 TSI engine with random missfire issues above 6500 RPM and found some deposits on the valves and a loose timing belt and I am curious to see his opinion. From that the owner of this car told me there might be a recall on the timing belt issue for some models...).

Thanks for sharing your thoughts!
 :drinking:

Offline rich83

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #468 on: July 01, 2012, 10:29:52 am »
If the compression ratio is 10.1, you should see 10.1 times atmospheric pressure when the cylinder is in compression. So ~ 10bar

Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #469 on: July 02, 2012, 08:01:11 am »
Thank you for the info!  :notworthy:

Hurdy... if the compression ratio is the same why do you have 12 bar compression pressure?

Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #470 on: July 23, 2012, 07:00:47 pm »
Over the past weekend I had no time to spend improving the car because I was on a road trip  :pomppomp:.
Along with two of my friends I visited the highest two mountain passes in Romania (one of them is the mountain pass that Top Gear visited during their show in Romania).
This was a really nice trip and I enjoyed the scenery, the car and the company.

The cars that my friends came with can be seen in this video:


the bruce you may not be able to see this video because it seems to be blocked in Germany...

One friend had a 335i with BMW Performance package (a previous mk5 GTI owner that he sold a day before the trip). I got the chance to drive this car and it is nothing like my car  :driver:
Fuscobal was driving his Polo GTI (his Golf GTI is being serviced).

A few photos:











And one small update... I decided to have the valves checked (and cleaned/replaced) so tomorrow I will pay my mechanic a visit. Hope all goes well...
Any comments are, as always, welcomed!

 :drinking:
« Last Edit: June 12, 2021, 10:01:23 pm by rex »

Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #471 on: July 23, 2012, 07:33:28 pm »
And the video with the Tranfagarasanul climb (the one pictured in Top Gear):


Offline the bruce

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #472 on: July 24, 2012, 12:17:39 am »
The cars that my friends came with can be seen in this video:


the bruce you may not be able to see this video because it seems to be blocked in Germany...

sadly you're right - it's because of the music  :wink:

like all these cars, even more these mountains and much more driving them  :happy2:
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Offline Hurdy

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #473 on: July 24, 2012, 02:04:49 am »
Thank you for the info!  :notworthy:

Hurdy... if the compression ratio is the same why do you have 12 bar compression pressure?

Just spotted this Rex :ashamed:

My compression test came out at 170-175psi, which is just over 12 bar. i don't know why it was so high unless it included atmospheric pressure on top?? Even then it is still 1 bar over pressure!.
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Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #474 on: July 24, 2012, 07:40:56 am »
sadly you're right - it's because of the music  :wink:

like all these cars, even more these mountains and much more driving them  :happy2:
I wonder which song is not allowed in Germany? Michael Jackson - Speed Demon?


Just spotted this Rex :ashamed:

My compression test came out at 170-175psi, which is just over 12 bar. i don't know why it was so high unless it included atmospheric pressure on top?? Even then it is still 1 bar over pressure!.
That is strange... Once I have the engine back on I will redo the compression test to see the results...

Offline the bruce

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #475 on: July 25, 2012, 01:05:18 am »
I wonder which song is not allowed in Germany? Michael Jackson - Speed Demon?

Music from "SME"?
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Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #476 on: July 25, 2012, 11:29:47 am »
I have no idea what SME or any of the other abbreviations (EMI, UMG, ...) stand for...

Offline Tfsi_Mike

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #477 on: July 25, 2012, 08:14:12 pm »

Great vid Vlad, fantastic route!!! Shame about the few sections that were being worked on.  Love the thought my old engine mount was part of that journey!  :driver:

Offline rex

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Re: Sunset Red 1.4 TFSI GT Sport - daily drive & track car
« Reply #478 on: July 26, 2012, 06:10:37 am »
Thanks!
I wanted to have more shots and angles but it was not meant to be... I also wish I had more editing skills but I guess there still is time to improve...
Yes, the route and the roads are really great. The thing I dislike about the road is the lack of side rails  :confused:. But these will come later...

Offline the bruce

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