Ben’s and then Eric's and now somebody else’s V8 CQ

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Grillage
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Re: Re: Ben's V8 Coupe Quattro - Rack Replacement fun

Post by Grillage »

Just confirmed that my pump is 150bar and the spare v6 (from a 90 or cabriolet) is 100 bar

I wonder if I just disabled one of the three sets of Pistons on the v8 pump if it would reduce it properly
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Grillage
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Re: Re: Ben's V8 Coupe Quattro - Rack Replacement fun

Post by Grillage »

After a bunch more research I figured out a few things (and thanks to Doug for his pics and guidance!)

The best option is to replace the V8 150 bar pump with a smaller pump from a cabriolet. It's 100 bar like the coupe's pump is and the coupe rack is built to use but it doesn't have the provision for the brake bomb.

As for the bracket, there is one that holds the smaller C4 and B4 V6 pumps (thought the C4's are 120 bar)
It's part number 077 260 885d
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So I went to the junkyard today and pulled a B5 1.8T hose that I'll need to have rebuilt on the rack end for the install.

Can't wait to get this behind me!
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Grillage
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Re: Re: Ben's V8 Coupe Quattro - Rack Replacement fun

Post by Grillage »

While I patiently wait for the new rack bracket, I've been working on other stuff.
Got the rear struts replaced today. All 4 struts were totally shot and now all are fresh! I used OEM but it rides better!

Also found the source of a gas smell I've noticed that is worst when the tank is full.
This breather outlet was leaking at the base...
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Jacked that corner up so the leak would stop and used some JB Weld:
Image
All Better!
that will make the drive to Carlisle much more pleasant!
CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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PRY4SNO
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Re: Re: Ben's V8 Coupe Quattro - Rack Replacement fun

Post by PRY4SNO »

Nice find!
Find me on Instagram @pry4sno

|| 2010 Golf Sportwagen TDI /// #farmenwagen
|| 2002 Dodge Ram 2500 24vt 4x4 #bertancummins
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

The bracket I'd hoped would work didn't. It pushed the pump into my coolant hoses so back to the drawing board.

Had a new PS hose made locally with the restrictor from an A4 I yanked from the pull and pay a while ago. The pump is quieter but still not right.

So I pulled the trigger on an Mr2 power steering pump (the later one with the reservoir) should be here in a week or so from UK

Anyone done this before? I found a good write up for install here:
http://www.k20a.org/forum/showthread.php?t=58599
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varia
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by varia »

Well done!
I was thinking about going Electric Hydraulic Steering Pump and somebody posted a volvo unit.
Since thats a can bus unit, lots of features are missing, plus the pump is close to 120 bar...
¯\_(ツ)_/¯

project 2226
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audifreakjim
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Re: Ben's V8 CQ - MR2 pump en route

Post by audifreakjim »

I am using an mr2 pump. Probably been in the car for 15 years now. I run it simple on. And off with the ignition, with a cut switch so I can stop it from running at any time. I had the seller include the original fittings, then had a hose shop braze on a standard high pressure hose fitting.
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Had a little time today to do something I've wanted to take care of for quite some time.
My car has been repainted in parts. Everything other than the doors, hatch, sunroof and hood (which is a b4 hood I put on) are clearcoated red. As a result, I have some really faded single stage red and some poorly resprayed red with peeling clearcoat.
I'd describe the paint as a 50 footer ;)

I did some polishing on the single stage to try and bring it back. I had done a couple spots last year as a test and finally got around to the rest today.

some before and after pics:

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Didn't take a before of the sunroof - this is an after (note the super shitty flaking paint on the roof):
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CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
sayoda
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Re: Ben's V8 CQ - MR2 pump en route

Post by sayoda »

Looks really good polished up!!
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Foscora
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Foscora »

Yep it's really better once it's polished. Too bad for your paint on the roof !
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Got the pump from the UK today finally.

I found some great info on this install. There are people with all kinds of cars using these things.

Firstly, here's the pump (cleaned up). Complete with pigtails for the harnesses:
Image
I have had a couple hoses made for my existing pump and I now have hard fittings on the rack and the pump with a hose in between - all connecting with 6 AN fittings.

So I found a fitting that uses 6AN for my existing hose and 16mm x 1.5 for the pump:
http://www.summitracing.com/parts/rus-670531

I also bought a 90* fitting so I could route the hose down:
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So now I will get it wired up and try to install. I found these diagrams for the wiring:
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I bought this relay kit and hope to get everything working this weekend:
http://www.amazon.com/Fastronix-Weather ... ge_o01_s00

Lastly, it occurs to me that with the PS pump eliminated, I will have eliminated my Viscous Fan, Power Steering Pump and AC Compressor.
The Fan pulley and AC Compressor are currently on the engine as rollers but I now will just have the alternator on the serpentine belt. I'd love to get rid of the extra stuff and make some more room for air movement.

See here:
Image
I can pretty easily get rid of all the stuff in the Red X's but the Blue one is tougher. I'll need to figure out how to tension the serpentine belt by likely moving the tensioner.
I will need to cut off the little bracket that the timing tools fit into so I guess I'll just source another belt cover if I ever decide to change the timing belt again.
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Found Marc's solution to the same problem on his V8TT Coupe:
This would be PERFECT.

A turnbuckle as a tensioner.

Image
CURRENT
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Dan McBoost
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Dan McBoost »

Thats a great idea for sure. You could always get a machine shop to make something up more OEM like if need be.
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kieron_32v
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by kieron_32v »

I ran mine with the factory tensioner and kept the fan pulley as an idler. Will post up a pic.

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1991 CQ20V 4.2 32V ABZ 01E 6spd. 034 IIc EFI turbo project
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kieron_32v
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by kieron_32v »

http://rs1052.pbsrc.com/albums/s459/che ... 0&fit=clip

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1991 CQ20V 4.2 32V ABZ 01E 6spd. 034 IIc EFI turbo project
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Thanks Kieron,
Your Pic:
Image

You are using the viscous pulley though- I'd love to omit that too. My fan sits right on it. If it were gone I'd get a pretty big increase in airflow.
CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Kieron, do you happen to know the belt you used here? I may well use this setup until I figure out a way to omit the other pulley
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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

The more I look at this, I think I can do it without relocating the pulley like Marc did in his pic above.

Image

If I use the yellow line routing, I just need to turn the tensioner into a pusher rather than a puller which can be done with a turnbuckle!

I have a lot of work to do this weekend to get ready for Carlisle.

The MR2 Power Steering Pump
re-routing the serpentine belt and removal of the AC compressor, PS Pump and two other pulleys
install of an 80* thermostat
swap of the carpet, door cards and headliner out of my new coupe
CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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audifreakjim
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Re: Ben's V8 CQ - MR2 pump en route

Post by audifreakjim »

That will not work well, the tensioner needs to be on the slack side of the belt right before the crank pulley. You have it on the drive side where it will just compress and everything will slip. Marc using a solid turnbuckle would not have this problem
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

I'm going to use a turnbuckle too. but it will still be on the drive side
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PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump en route

Post by Grillage »

Made some progress today

Got the 80* thermostat installed. It has no hole - I know some people swear by the hole and even drill a small hole in thermostats that come without. What do you guys think?

Also, got the serpentine belt re-route done. It was right at 100cm
Image

Image

How tight should I make the belt with the turnbuckle?

I also got the euro bumper fitted up finally
Image

I have almost everything ready for the MR2 PS pump install. I need a couple AN fittings and he bracket to mount it and I'll be good.

I hope to wire it all up tomorrow in advance.
CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
viridia
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Re: Ben's V8 CQ - MR2 pump en route

Post by viridia »

The belt in the B6 S4 is kinda similar, and the tension pulley doesn't have a spring of any sort. That application you just make it taught with your hand strength and then tighten the adjustment bolt.
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump install

Post by Grillage »

I made some more headway today.

Got the Power Steering Pump wired and relayed. Tested it and it fires up. I have it triggered by the ignition switch so it will be always on.

From what I understand about this later version, it senses the resistance on its own and dials back the pressure when it's not called for anyway.

I decided to drill a 1.8" hole in the thermostat and got it all back in there. Loaded it all up with coolant and bled the system and ran it a bit.
The Alternator and new serpentine belt seem to be working just fine.

Unfortunately, The Euro Bumper isn't going to work on this car. It was fitted up yesterday with the radiator out and with it back in I would need to do a lot more cutting than I want to.

So back goes the old ugly bumper.

I did finally get around to figuring a way to install the strips below the headlights. With the large radiator in this car I had to cut off the ends of the headlights that hold them in.
I cut the ends of the strips off and put a screw through the little tab on the bottom into the headlight itself.

Image
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Small victory I guess, but a victory no less.

Once the fittings for the PS hose and a bracket I ordered show up I hope to be done screwing around with the engine bay for a while.
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1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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PRY4SNO
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Re: Re: Ben's V8 CQ - MR2 pump install

Post by PRY4SNO »

Looks great with the trims! And of course nice work on the belts, interested to see the long term results.

Seems like you'll have to go R/S2 or Euro V6 for your bumper needs if the Euro Coupe is no good?
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|| 2010 Golf Sportwagen TDI /// #farmenwagen
|| 2002 Dodge Ram 2500 24vt 4x4 #bertancummins
|| 1992 80 quattro 20v /// Eventual AAN'd Winter Sled
|| 1990 Coupe quattro /// Because Racecar
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Grillage
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Re: Re: Ben's V8 CQ - MR2 pump install

Post by Grillage »

Thanks!
That's what I'm thinking too. Since this car is really an ugly duckling, I'll likely just leave the NA spec bumpers on it.

I made more progress today on the PS pump install.
The bracket I ordered showed up today from a guy in Montreal that made a few:
Image

I painted it Tornado Red (with my trusty paintscratch.com spray can) and put it in place:
Image
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It's a little close to the exhaust manifold for my taste so I took some spare sheet metal and cut out a little heat shield. It's a little hard to see as it got dark:
Image

I'm all done other than a couple fittings to finish the install. They arrive tomorrow and I hope to god this works.
CURRENT
1995 90 Quattro 20VT - 1987 Porsche 924S - 1979 Porsche 928

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1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1986 Audi Coupe GT - 1995.5 Audi S6 - 1994 Cabriolet - 1993 Audi V8 - 2013 A5 - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
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