Her Mars Red 83 Urq ...23psi of manual boost...vid

[quattro87]

Martin, Those are both a couple of really nice looking engine bays. If I can come close to either one I will be happy. I think maybe Hank is getting a little enthusiastic comparing my work to Mike's car, but I do like clean. One thing that worries me some is that I have no intention of going a 3B transplant, but rather a mix and match. This approach can go either way however as far as the clean stock look goes. Is that an RR air box on yours? Your 3B looks like it came off the showroom floor like that. Thanks for the pictures!!

I still question the "her urq" bit, btw. ha!

Just look at the plate on page 1 of this thread. I'm open to suggestions however on how I ought to differentiate between the two, being that they are both Mars red, both 83s and both pretty much identical. Maybe name them like Martin does? Truthfully, nothing would make me happier than to have my wife suddenly take ownership and want to run the car out to an Audi event, even if it were just to hang out and show off the car. Even grandpas can dream can't they?

Is it done yet?

No Darin....not yet. Are old Audis ever done? The 7A head that I got from you that didn't have the cams is what I'm working on for the build however. Thanks and nice hearing the good ole "is it done yet" from you. LOL

[quattro87]

Speaking of building up the 7A head that I got from Darin, after the water mani machining was complete I went on to clean up the rest of the head. The valves are stock 100+k mile units that I took to my balance machine shop guy. When asked if he could reface the valves, he points to his Sioux valve grinding machine and says that he is busy, could I run the machine. This is the first time I've met the guy!! More on the engine balance later.

Facing the valves


I then spent some time and port and polished the head. I didn't get really carried away as I don't have access to a flow bench and mostly I just wanted to get rid of casting ridges. I opened up the small radius on both the intake and exhaust and tried to get rid of the ridge between seats and chamber. I don't really know whether I helped or hurt, but I feel good about the job and it sure looks like it will flow more. Again the proof will be in the pudding.

Exhaust port




Intake port




combustion chambers/bowls

[speeding-g60]

the bowls are the area that will show the most improvement i think.

are you coming to Wuste? my car will be in Integrated Engineerings booth on display. not that you havent seen it, but give you a good chance to meet the IE guys if you wanted to....

[quattro87]

Yea to get rid of the ridge between seat and bowl has got to help. I worry about the amount of material taken off of the seats at times, but there is still quite a bit of seat material. A few of them I had a hard time getting my 60deg angle cut in and still have enough seat left for the 45 and 30deg cuts.


Is Wuste this weekend or next?

[speeding-g60]

this coming weekend 3,4,5.....

[quattro87]

As mentioned above, to save money for the EFR Turbo, I opted to do the head work myself. Nothing fancy just the port and polishing, new seals, faced valves, and a 3 angle cut on the seats. The valve guides were still in decent shape, so I made the decision to leave them as is. A few years ago I had a seat that needed some touch up work done on it and I didn't want to take it to the machine shop to have it done and always wanted a set of cutters for the small valve work that is in the I5s. I started looking and came up with some Neway cutters.

http://www.cylinderheadsupply.com/nestdicubo.html

I was a little skeptical, but these are really nice cutters. I bought two sizes in 30,45, 60deg for both the intake and exhaust. I probably could have made the small size work for the intake seats also. I cleaned up the original head and Hank has rebuilt his head that he is currently running on his car now. In other words the cutters are pretty well paid for already.

Getting ready to cut 3 angles into my seats. The blueing is to help these tired old eyes be able to see the angles and width of the 45deg seating edge.

[Wheeljack]

Great batch of updates...I've got a similar, but different, story to tell...

Let's try to get them on the road for this as yet undetermined gtg

[quattro87]

I put the head back together with stock springs, but stole out of His Urq parts to come up with a set of lightened lifters and Ti retainers. The thought is that I don't really plan on revving this engine to 8.5k like someone I know pretty well, but would like a 7.5k limit and a feeling that it would just keep going. I'm hoping that the lighter valve train will promote a good clean want to rev feel, but that should I up the limit to 8-8.5k that the stock springs will still be able to control valve float with the lighter valve train. We will see. I have more into the retainers and lifters than the rest of the head although it doesn't seem like it since I stole from the local parts bin.

Here is a shot of the finished head. I had the setting on the camera wrong and ended up having to touch up the original picture, but you get the idea.

[ralleyquattro]

You guys have all the toys, looks like it should be finished by noon today!

[foxbat]

That's what I've been doing wrong John, I don't have my coil in a cardboard box :frustrated:

[quattro87]

You guys have all the toys, looks like it should be finished by noon today!

Not hardly. We put most everything we have together with channel locks and a screwdriver around here. And you surely know me better than to think I'm fast putting any project together. I'm about caught up with my project thread and need to get out in the garage and do some more actual work, but then with the time change, I do have an extra three hours before noon.

That's what I've been doing wrong John, I don't have my coil in a cardboard box

Sean, anybody knows that the coil has to be within wire distance of the distributor. Hopefully, now that you are up to speed you will be able to keep carrying the Mars Red torch as the other blue Urq owner here in town gets a little snooty when his is the only car that runs. I won't mention names, but it sounds a lot like yours.

[quattro87]

Great batch of updates...I've got a similar, but different, story to tell...

Let's try to get them on the road for this as yet undetermined gtg

Where is your project thread for your Urq? Post up!! I'd be interested in your approach if your Urq turns out as nice as your coupe quattro. The way you work you won't even have to start for another month or two and will still be able to make that kind of deadline.

[Highlander]

Great progress John.

This is going to be sweet.

keep the pics coming

Cheers,

Craig

[Quattro v1.0]

http://www.cylinderheadsupply.com/nestdicubo.html

I was a little skeptical, but these are really nice cutters. I bought two sizes in 30,45, 60deg for both the intake and exhaust. I probably could have made the small size work for the intake seats also. I cleaned up the original head and Hank has rebuilt his head that he is currently running on his car now. In other words the cutters are pretty well paid for already.

Getting ready to cut 3 angles into my seats. The blueing is to help these tired old eyes be able to see the angles and width of the 45deg seating edge.

Man it's sure been a long time since I did any of that stuff. I wonder if the range of cutters you have would work with the Lancia valve sizes. 36.5 / 43

[Hank]

Naturally, my Dad bought more than he needed, with the 20v in mind. They have 33 and 38/40mm intakes IIRC, so yeah, they would work. You may have to buy the mandrel as my Dad bought these with 7mm stems in mind. I am not sure what the Lancia stuff is.

Have you sent me a rod and bearings yet?

Hank

[quattro87]

Great progress John.

This is going to be sweet.

keep the pics coming

Cheers,

Craig

I sure wish I had a lift to be able to pull the motor and trans out the bottom. What a PITA!!!! Craig, I might have to fly you out to Las Vegas to cut the core support out before it's all said and done. :wink: Audi really missed the boat when not designing these cars with removable fronts. Spot welded everything!!!

[audifreakjim]

Looks great!

[ralleyquattro]

I sure wish I had a lift to be able to pull the motor and trans out the bottom. What a PITA!!!! Craig, I might have to fly you out to Las Vegas to cut the core support out before it's all said and done. :wink: Audi really missed the boat when not designing these cars with removable fronts. Spot welded everything!!!

Sure you can, most 2-ton jacks can lift the car high enough to slide the motor under even with the valance on.

[quattro87]

Thanks Martin for keeping me from sliding down that slippery road. First I kick out a perfectly good 20vt and then start contemplating cutting the core support. I needed to be brought back to reality.

My car as it sits


I just hate dealing with the driveshaft, axles, trans linkage, and all the other little bits it takes to drop the whole assembly. Oh Well!! I just keep telling myself this is what it will look like coming off the line with a real motor in it. :wink:

Do you have rollers bolted to the motor mounts or is it just on some sort of dolley?

[ralleyquattro]

I used to have a full sheet of plywood and just push the damn thing in/out. There is enough slip between alloy of the oil pan and wood that it's actually not that hard and I can do it by myself. Oh few occasions I used my creeper to slide the assembly as well, nice and low profile. I have a nice creeper with roller bearing wheels.

[Mcstiff]

Can you drop everything on the subframe (engine, trans, LCAs, strut assemblies)?

[ralleyquattro]

Then it's too heavy and hard to control as it moves down. What I do is remove the shafts, subframe and let the engine sit on the engine mouts. It's actually pretty well balanced that way, might need a safety stand under the back end of the transmission. with the subframe out of the way it's easy to get at shift linkage, clutch hose and speedo cable.

Then I undoo the 4 bolts holding the mounts to the body and let her down gently.

[cuatrokoop]

John, the stock stuff doesn't have a problem with 7500rpm. My 7A would fuel cut at 7400rpm. Just do the light lifters in this one, leave the Ti retainers for the other car. Or, switch the other car to single spring like Audi did for the AFC with Ti retainers, light lifters etc etc. Get the valve-train really light......

[quattro87]

My plan exactly Martin. I wanted to rebush the 30yr old control arms anyway. Poly, density, or oem?

ust do the light lifters in this one, leave the Ti retainers for the other car. Or, switch the other car to single spring like Audi did for the AFC with Ti retainers, light lifters etc etc. Get the valve-train really light.

Exactly what Hank says, but I figure that the stroker will be less likely to rev past 7500 and besides this head is already together so the Ti retainers stay for awhile anyway.

[quattro87]

I wonder if the range of cutters you have would work with the Lancia valve sizes. 36.5 / 43

Like I said earlier I probably could have got away with just the small set and just adjusted the cutters further out in order to cut the larger intake valves. In the Lancia's case with the 43mm intake I think the smaller set would be to small, but we should be able to do them with the other set. What diameter valve stem does the Lancia use? Like Hank says I bought three shafts, all around the 7mm range so that I could make sure I could cut with good concentricity even with slightly worn guides. Obviously the tighter the fit of the cutter shaft in the valve guide, the better the cut.