2019 Sorn work list - Page 2

20vcqdriver · 31-12-19, 12:00 AM

Well, engine almost all back together, whilst its been in bits I have also taken the opportunity to replace a few items that were 'temporary' 5 years ago when the engine went in:

This heat shield is well past its use by date, patched up last time but will be getting replaced.

Old botch up and below new nomex oil resist hose. Just changed in time as the old rubber had gone all squishy.

As new housing larger it puts it close to the chassis and wiring so ordered some heat wrap to protectit and added additional insulation to the heatshield as this could under certain situations be glowing red

slacky · 31-12-19, 08:30 AM

Will be looking forward to doing some test runs

20vcqdriver · 02-03-20, 06:45 PM

Taxed the cq again last night once I'd recovered from a terrible train journey back from London. Cannot go too mad until the remap but first impressions with the new turbo.

1) The WOT surge has gone

2) Boost now comes in later by 300ish rpm so now boosts from about 3200rpm and comes in more progressively so no sudden rush of power as I used to get at 3000rpm.
3) The turbo 'whistles' more, not sure if its a boost leak but that will have to wait until the visit to Automark.
4) Don't get the full potential until your almost on WOT, So driving it on half throttle and below 3000rpm is uneventful

Now have 2 weeks to wait until it gets fettled

20vcqdriver · 01-05-20, 11:23 AM

I have been limited on my engine by the MAF that is maxing out and limiting the power and torque this modified turbo can make, so have had a larger MAF made and just need for the lockdown to end so I can get upto Automark to get this larger one matched to the engine and see what its capable of

John. · 01-05-20, 11:34 AM

Quote:

Originally Posted by 20vcqdriver

…….. see what its capable of

.

Bet you can't wait !!

20vcqdriver · 03-08-20, 10:33 AM

Have at last been able to get to Automark for the re-map with the new turbo. He found several boost leaks that we fixed, tested the compression that he said was high at 198psi ( I only reduced compression from 9.3:1 to 9:1 with the piston change) and the total seal 2nd rings I have fitted stop any gases leaking past the pistons, but its consistent across all cylinders, then fitted the 7A fuel pressure regulator to increase fuel pressure by 1/2 bar to ensure enough fuelling. Fitted the larger MAF and went out for some test runs.
Result is a safe max of 28psi boost (normally run at 26psi using switch on the dash can select higher value when needed

) and to keep engine safe in hot weather he backed off the ignition slightly, and some test runs revealed 30-50 in 2nd is around 0.8 secs. 70-90 mph in 5th is 2.6 secs. Plenty fast enough for me for a road car and touch wood stays reliable for many years to come (hope that's not jinxed it)

Not sure of power but Mark reckons around 450bhp and around 350-380Lb/ft torque at a guess.

John. · 03-08-20, 11:50 AM

Running well then!

20vcqdriver · 04-08-20, 11:43 AM

Quote:

Originally Posted by John.

Running well then!

Just need some sustained good weather up North so I can take the car out for a good run ...

Sunny one day at work last week and thought I would take the car out once home but quite literally the second I stepped out to go home it rained...

Gaz · 11-11-20, 01:30 AM

Quote:

Originally Posted by 20vcqdriver

Have at last been able to get to Automark for the re-map with the new turbo. He found several boost leaks that we fixed, tested the compression that he said was high at 198psi ( I only reduced compression from 9.3:1 to 9:1 with the piston change) and the total seal 2nd rings I have fitted stop any gases leaking past the pistons, but its consistent across all cylinders, then fitted the 7A fuel pressure regulator to increase fuel pressure by 1/2 bar to ensure enough fuelling. Fitted the larger MAF and went out for some test runs.
Result is a safe max of 28psi boost (normally run at 26psi using switch on the dash can select higher value when needed

) and to keep engine safe in hot weather he backed off the ignition slightly, and some test runs revealed 30-50 in 2nd is around 0.8 secs. 70-90 mph in 5th is 2.6 secs. Plenty fast enough for me for a road car and touch wood stays reliable for many years to come (hope that's not jinxed it)

Not sure of power but Mark reckons around 450bhp and around 350-380Lb/ft torque at a guess.

That sounds good power

. Has it been on a dyno yet? and what clutch are you using? is it up to the job of almost 400lb/ft of torque ?

31-12-19, 12:00 AM	#11
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	Update Well, engine almost all back together, whilst its been in bits I have also taken the opportunity to replace a few items that were 'temporary' 5 years ago when the engine went in: This heat shield is well past its use by date, patched up last time but will be getting replaced. Old botch up and below new nomex oil resist hose. Just changed in time as the old rubber had gone all squishy. As new housing larger it puts it close to the chassis and wiring so ordered some heat wrap to protectit and added additional insulation to the heatshield as this could under certain situations be glowing red __________________ Coupe quattro 1986:-~450bhp + loooong list of mods! Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque! Audi S4 4.2 V8 cabriolet 2004:-

31-12-19, 08:30 AM	#12
slacky 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: wirral Posts: 4,452	Will be looking forward to doing some test runs __________________ *90q-Cab.2.3E-Ur-S6-b2-80 Sport* Member 111

02-03-20, 06:45 PM	#13
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	Taxed the cq again last night once I'd recovered from a terrible train journey back from London. Cannot go too mad until the remap but first impressions with the new turbo. 1) The WOT surge has gone 2) Boost now comes in later by 300ish rpm so now boosts from about 3200rpm and comes in more progressively so no sudden rush of power as I used to get at 3000rpm. 3) The turbo 'whistles' more, not sure if its a boost leak but that will have to wait until the visit to Automark. 4) Don't get the full potential until your almost on WOT, So driving it on half throttle and below 3000rpm is uneventful Now have 2 weeks to wait until it gets fettled __________________ Coupe quattro 1986:-~450bhp + loooong list of mods! Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque! Audi S4 4.2 V8 cabriolet 2004:-

01-05-20, 11:23 AM	#14
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	I have been limited on my engine by the MAF that is maxing out and limiting the power and torque this modified turbo can make, so have had a larger MAF made and just need for the lockdown to end so I can get upto Automark to get this larger one matched to the engine and see what its capable of __________________ Coupe quattro 1986:-~450bhp + loooong list of mods! Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque! Audi S4 4.2 V8 cabriolet 2004:-

03-08-20, 10:33 AM	#16
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	Have at last been able to get to Automark for the re-map with the new turbo. He found several boost leaks that we fixed, tested the compression that he said was high at 198psi ( I only reduced compression from 9.3:1 to 9:1 with the piston change) and the total seal 2nd rings I have fitted stop any gases leaking past the pistons, but its consistent across all cylinders, then fitted the 7A fuel pressure regulator to increase fuel pressure by 1/2 bar to ensure enough fuelling. Fitted the larger MAF and went out for some test runs. Result is a safe max of 28psi boost (normally run at 26psi using switch on the dash can select higher value when needed ) and to keep engine safe in hot weather he backed off the ignition slightly, and some test runs revealed 30-50 in 2nd is around 0.8 secs. 70-90 mph in 5th is 2.6 secs. Plenty fast enough for me for a road car and touch wood stays reliable for many years to come (hope that's not jinxed it) Not sure of power but Mark reckons around 450bhp and around 350-380Lb/ft torque at a guess. __________________ Coupe quattro 1986:-~450bhp + loooong list of mods! Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque! Audi S4 4.2 V8 cabriolet 2004:- Last edited by 20vcqdriver; 05-08-20 at 09:13 AM.

03-08-20, 11:50 AM	#17
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	Running well then!