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Author Topic: Jay's Golf Coupe "racek0r" project  (Read 162394 times)

Offline Tfsi_Mike

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #450 on: November 07, 2016, 08:50:36 pm »
Don't blow it up man!  :scared:

Offline rich83

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #451 on: November 08, 2016, 12:48:23 am »
Don't blow it up man!  :scared:

The only thing jay will blow up is his sex doll.  :popcornsoda:

Offline xjay1337

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #452 on: November 08, 2016, 09:50:32 am »
Don't blow it up man!  :scared:

The only thing jay will blow up is his sex doll.  :popcornsoda:

not a nice thing to call Laura now is it??

it's fine, EGT should only peak around 1050 and only 1 or 2 dyno pulls .

we have another turbo and another cylinder head so if it does go pop not the end of the world.

Offline teo_parvu

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #453 on: November 08, 2016, 07:34:20 pm »
:)))

Good luck on Saturday! 280++++++++++++++++++ :signLOL:

Offline xjay1337

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #454 on: November 11, 2016, 12:43:37 pm »
Thanks guys I will update you all after the event.

Oil cooler update.

Due to track related oil temperature problems I wanted a solution. I had an idea and spoke with Alex @ AKS and we decided to try some stuff.

Darkside Developments sell a kit with a Mocal thermostatic plate but the oil cooler provided was a cheap Chinese one, so that was sent back and Alex sourced a Mocal 13 row cooler and kept the Thermostatic plate.

20161110_104249 by Fat Bear Photography, on Flickr

I won't bore everyone with the fitting details but it wasn't exactly "bolt on".

We had to retain OEM oil cooler (OEM is a heat exchanger oil is circulated with coolant) however we had to modify the OEM oil cooler and remove the water feed.

20161110_131937 by Fat Bear Photography, on Flickr

Alex welding the brackets to give the right level of support.

20161110_151626 by Fat Bear Photography, on Flickr

Final fitted position.

20161110_185731 by Fat Bear Photography, on Flickr

We started at 10am and I left the workshop around 8pm. We weren't working on it flat out all day though, but it was a bit fiddly.

We did also fit H&R 28/24 front and rear roll bars. This has really stiffened it up in the corners. Lovely.

Oil temps are much better now. Cruising they get to around 80 and stay there due to thermostatic plate. Even with several hard and long acceleration pulls it barely reached 90 so that's much better. Very happy.

Offline Shoduchi

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #455 on: November 11, 2016, 12:48:31 pm »
Great news! :pomppomp:

Offline Pesky jones

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #456 on: November 11, 2016, 12:58:59 pm »
Awesome, guess the test will be next time on track? Im sure it wouldn't bore anyone if you could explain the difficulties in mounting it if you have the time, someone might find it very useful in a year or two or five. Only the first picture shows for me, and the rest are blank - like all your photos are for me. So annoying because I know there's good photos there! Must just be blocked on my PC

Offline ChrisGT

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #457 on: November 11, 2016, 05:29:46 pm »
Great project, like the updates.  :happy2:

Chris
It wouldn't be fun if it was easy, I just wish it wasn't this much fun.

Offline xjay1337

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #458 on: November 14, 2016, 12:19:22 pm »
Awesome, guess the test will be next time on track? Im sure it wouldn't bore anyone if you could explain the difficulties in mounting it if you have the time, someone might find it very useful in a year or two or five. Only the first picture shows for me, and the rest are blank - like all your photos are for me. So annoying because I know there's good photos there! Must just be blocked on my PC

I have a few other photos but haven't uploaded them.
Odd you can only view the first, maybe something to do with your PC, they appear fine for me :)
Let me know if you need to see anything specific and I can send to you directly if need be.

The kit sent simply does not fit due to OEM water feed to the oil/water heat exchanger
you have to cut down the 2 metal pipes on the heat exchanger and then loop the oem water feed back onitself.
ideally we want to remove oem oil cooler because it's doing literally nothiing but the baseplate has a threaded bar on it and as it's supposed to go through the heat exchanger the threaded part is literally right at the top.
we were going to cut and weld it but thought better of it without having the time or spare parts.

Chris - thanks glad you like it :) certainly coming together now


Regarding the dyno day!

Met up with Bobby on Saturday at Surrey Rolling Road
Had a good afternoon chatting to people.

Due to some of the figures coming out of Europe (claiming 270bhp + on stock cp4 pump) we decided to run a test on my car.

We ran a new map, with a dummy EGT sensor (so no EGT protection)
requested lambda 0.9 (another 5-10% more fuel than before)
(normal tune lambda is 1.1-1.2)

20161112_121707 by Fat Bear Photography, on Flickr

Even with the extra fuel we were just getting extra smoke. Logs show lambda didn't get below 1.08.

You can see the graph before and after here. The pink (better curves) are the new v25 map and the blue ones were the old v24 map.

20161112_122514 by Fat Bear Photography, on Flickr

You can see while we have dumped loads more fuel in, we are now up to over 430 lb ft of torque however power is exactly the same as before, albeit it holds at the top end now (due to EGT protection effectively not working).

Flat power curve is all well and good but further proves no more airflow available.
We are slowly ruling out any mechanical restrictions to downpipe or intake however this further points to prove that airflow through CR170 head is poor.

We thought the OEM lambda probe was faulty or defective as we could not believe the logs so we ran an independant Lambda probe

20161112_174952 by Fat Bear Photography, on Flickr

20161112_175001 by Fat Bear Photography, on Flickr

IMG-20161112-WA0008 by Fat Bear Photography, on Flickr

Turns out the oem lambda was within range and not telling us lies. We are 100% out of air.



On this particular tune due to excess fuel we were seeing a peak of 2.7bar despite request 2.4

After testing we put v24 tune back on as this tune is not safe for daily use.

Offline mdmay

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #459 on: November 14, 2016, 07:50:36 pm »
Can you get the head to a flow bench to see what gains there are to be had in porting it? The car looks great by the way.
Regards,

Mike

Offline xjay1337

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #460 on: November 15, 2016, 12:04:12 am »
Can you get the head to a flow bench to see what gains there are to be had in porting it? The car looks great by the way.
Hi bud.

Yes we have another cylinder head we are going to port it. See on the last page :)

Soz i missed your call, left my phone upstairs charging on silent doh. Will get back to you tomorow :)

Offline xjay1337

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #461 on: December 28, 2016, 01:37:00 pm »
Was driving to shops. Midway through a tunnel run went to change gear and pedal went to the floor.

I falsely diagnosed it as a duff slave cylinder. As my clutch is a heavy 6 paddle I imagined it was on it's way out anyway.

Infact , and luckily for my bank account, it wasn't anything so dramatic.
A clip which holds ones of the clutch lines in decided to disintegrate. Causing fluid leak and lack of hydraulic pressure.

I could have drove home clutchlessly but not ideal given my journey had lots of traffic lights etc.



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http://thumbsnap.com/s/TqZJAKPq.jpg[/img]|http://thumbsnap.com/TqZJAKPq]|http://thumbsnap.com/TqZJAKPq
« Last Edit: December 28, 2016, 02:48:08 pm by xjay1337 »

Offline Shoduchi

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #462 on: December 28, 2016, 01:47:00 pm »
Damn clips provoking troublesome and worrying situations. :fighting:

Glad it was just a minor issue. :happy2:

dansmith180

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Re: Jay's Golf Coupe "racek0r" project - More economical than Dan's car.
« Reply #463 on: December 28, 2016, 01:51:08 pm »
Phew, more money for fun stuff  :party:

Offline AJP

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Heart in mouth moment?!

This happened to me in the old mk4.... except it was the brake pedal

Luckily I was only a minute from home.