VW/Audi 07K (2.5L 20V I5) Swap Thread
#871
I think there will be enough room to route the coolant line(s) from the back of the engine around the driver side, under the intake manifold and brake booster.
As for the fitting in back, there’s a little over 60mm (almost 2-1/2”) from the mounting face of the fitting to the standing seam on the firewall. So, there should be plenty of room for a fitting. It might be tough to remove with the engine installed due to the long studs that it mounts on, but maybe that’s not necessary. We can just treat this fitting as a permanent piece of the engine that moves the coolant port to a more accessible location.
#872
Racer
I think there will be enough room to route the coolant line(s) from the back of the engine around the driver side, under the intake manifold and brake booster.
As for the fitting in back, there’s a little over 60mm (almost 2-1/2”) from the mounting face of the fitting to the standing seam on the firewall. So, there should be plenty of room for a fitting. It might be tough to remove with the engine installed due to the long studs that it mounts on, but maybe that’s not necessary. We can just treat this fitting as a permanent piece of the engine that moves the coolant port to a more accessible location.
Last edited by JWebber; 01-28-2019 at 09:05 PM.
#873
Racer
On another note , How long before we will have a finished version of the intake ready for shipping ? I am currently looking around for another rolling shell to pick up so I can mock up everything and work out all the little things before I take my car apart .
#874
Rennlist Member
#875
Rennlist Member
years ago TonyG witnessed the trans wiggling up and down over an inch each way during a run on an elevated dyno, his 6.whatever liter V8 was bending the torque tube just as you describe.
stock 944 BH has a fairly thick "pad" where the TT attaches so i think you're on the right track.
stock 944 BH has a fairly thick "pad" where the TT attaches so i think you're on the right track.
I bumped up the thickness of center hub (flower petal shaped part) and gussets to 7 gauge (~3/16"). I also changed the clutch inspection port and slave service port to round holes instead of square. Looking good now:
#877
...If you plan to have heat in the car then the factory coolant flange and thermostat housing might work...
#878
Racer
If it was just a simple flange on the back of the head , it would be no problem at all . The way the 07k flange works is a little more involved . The tube coming out of the cylinder head goes through a seal in the timing chain cover . The coolant flange has a recess for that seal , then another step inside for the o-ring and it’s retainer . I’ll cut the factory plastic flange down a little and bring home a piece of tubing and take a couple pics of what I have in mind . Pics usually help with explaining things .
#879
So.... for those of us in less temperate parts of the country who are looking to drive in...shall I dare say, less than warm temperatures.... how hard would it be to make like a "T" for the heater core from the coolant exit point? Would that be a custom aluminum job or do they make plastic "T's" for coolant hoses? I can get myself around in the world of minor fabrication, but simple is always better!
If it was just a simple flange on the back of the head , it would be no problem at all . The way the 07k flange works is a little more involved . The tube coming out of the cylinder head goes through a seal in the timing chain cover . The coolant flange has a recess for that seal , then another step inside for the o-ring and it’s retainer . I’ll cut the factory plastic flange down a little and bring home a piece of tubing and take a couple pics of what I have in mind . Pics usually help with explaining things .
#880
Rennlist Member
I think the one on the back of the engine is a little more complicated to machine because it needs to make a 90 degree bend, and potentially needs multiple branches coming off of it. Seems like more of a fabricated or cast part to me. iAbed sells cast parts that are really similar to what we need, but none are made to fit the 07K specifically.
#882
#883
Pictures are always good! I had a pretty good idea of what it looked like but this helps a lot. I could understand the need for a new low profile piece for the one on the back of the engine, but if I can get away with the stock one that would be.... Cool 😉 but what I don't understand is why the one on the drivers side has to be replaced if it isn't in the way of anything. Yeah it's pointing the wrong way but bending coolant hosing with some heat and convincing shouldn't be a problem, right?
#884
Rennlist Member
Yes its just a pipe, but it holds the thermostat in place. There is also an o-ring that seals the cover to the housing which makes fabricating a replacement cover more challenging.
The picture below is what Webber is referring to on the back on the flange, and its one of the reasons I thought using the stock flange might be easier to use. I think there would be enough room against the firewall to run the factory option, but again, it depends on your plans around heat, etc. Hopefully my basic diagram at least explains the coolant flow.
The picture below is what Webber is referring to on the back on the flange, and its one of the reasons I thought using the stock flange might be easier to use. I think there would be enough room against the firewall to run the factory option, but again, it depends on your plans around heat, etc. Hopefully my basic diagram at least explains the coolant flow.
Nice pictures. I don't know how I missed them when I replied yesterday. I'll check again if the stock piece fits on the back of the engine. I really don't think so, because the fittings are angled rather than 90 degree. Even if the fitting can be installed, it forces the hoses right into the firewall.
#885
Nice pictures. I don't know how I missed them when I replied yesterday. I'll check again if the stock piece fits on the back of the engine. I really don't think so, because the fittings are angled rather than 90 degree. Even if the fitting can be installed, it forces the hoses right into the firewall.