Machine shop agreed that the guides were probably my issue, since the ports were wet and the top of the pistons weren’t. They are going to measure the guide clearances for me also. Now it’s just a waiting game.
waiting sucks but getting a conformation of what the issue was is huge. Thats so trough when your trying to track down the issue only to find more issues and several dead ends
This is what my pistons looked like when I pulled the head this last time.
http://i10.photobucket.com/albums/a129/2fast4sanity/Mobile%20Uploads/image_zpsztjr0gnq.jpg
I’m concerned about the top edge of the pistons of cylinders #2+3. It looks like oil wash from a bad ring seal, but I guess it could theoretically be wash coming from the bad guides also. I guess I’ll find out when I get it back together.
That looks like normal ring wash. It would make more sense from that then the guide leak. Its not too far into the piston so thats not too bad. What was the copression test in those two cylinders
The most recent test was:
Cyl #1 - 165 psi
Cyl #2 - 165 psi
Cyl #3 - 175 psi
Cyl #4 - 170 psi
That was done with car at operating temp and was a dry test. I’m also going off the pictures I took, so I rounded to the nearest 5 psi since they weren’t great pictures.
Obviously a leakdown would tell you more. But from the quick look at the compression numbers the car shouldnt be in too bad of shape
Leakdown numbers are a page or two back in this thread.
Shit’s about to go down!
http://i10.photobucket.com/albums/a129/2fast4sanity/Mobile%20Uploads/image_zpsby40rn93.jpg
Sweet!
Thats serious looking. Why does it look like its got two waste gates
The one on the compressor housing is a diaphragm diverter
those turbos are so gorgeous, you don’t see that craftsmanship on any other brand. or the creativity
how would something like the turbo shown stack up against the standard GT turbos it looks like a twin scrolll
It is a twin scroll. The EFR 7163 is a ~60 lb/min turbo, so that ranks it just a touch below a GTX3076. However, the EFR turbos use an exhaust turbine made from titanium aluminide which drastically reduces the mass of the wheel and improves spool and response. The 7163 specifically has a mixed flow turbine wheel that is supposed to help even more. It’s basically a big GT30 flow wise with spool characteristics of a smaller GT28. And then when you make it twin scroll, it should just be nuts. At least that’s what I’m hoping.
Finally making progress on my manifold. I needed a twin scroll collector, and I opted to do two 2-1 collectors instead of a 4-1 with a divider plate. It seemed to be the easier option.
I had to augment my garage/shop/laboratory with a couple extras before getting started:
Dual flowmeter regulator for my Argon bottle to allow me to backpurge stainless stuff:
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsuvldeb1n.jpeg
And a 16 speed 13" drill press:
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsyjtpzj6k.jpeg
Made my purge block first. This also acts as a heatsink to help prevent any warping of the flange.
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsd96okrqg.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsakcg05ej.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsxds61eev.jpeg
Then cut and tacked the collector
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsqjyfzahq.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsbopysmvu.jpeg
Stuffed some foil in the pipes, turned on the argon and fired up the AHP.
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zps5lm0uofh.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zps13nijtta.jpeg
Finished product. I welded the inside of the collector also. I did this by keeping the foil balls in place, turning it upside down, filling it with argon and using major tungsten stickout. After welding it, I smoothed the transitions with my die grinder and a carbide bur.
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsy4zj3g4g.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsznqznphm.jpeg
Purge block I made for welding my manifold:
http://i10.photobucket.com/albums/a129/2fast4sanity/heatsink_zpskmozmawf.jpg
Also made a pipe beveler out of a repurposed Harbor Freight electric die grinder and some scrap steel.
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsecuaqsda.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpswbpwnvfa.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsefzkazab.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpso4csiufu.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsmaqtunmu.jpeg
I drew up the exhaust flange in AutoCAD in case I need more made down the road.
http://i10.photobucket.com/albums/a129/2fast4sanity/Mobile%20Uploads/image_zpspgik0saz.jpeg
Finally getting started on the meat and potatoes of the project:
http://i10.photobucket.com/albums/a129/2fast4sanity/Mobile%20Uploads/image_zpstzoyd75a.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsalzqkyve.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsl2insfxq.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsrhthwqwo.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpsqiuafqwu.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/Mobile%20Uploads/image_zpsdyhrlmhm.jpeg
Very impressive work!
WOW good looking work. Lots and lots of time into that. thanks for the updates
Impressive build, excited to see this thing fire up!
Finished tacking it together tonight. I’m going to test fit it when I swap my new engine in and then weld it up provided there are no issues that need addressed.
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpspusqxeef.jpeg
http://i10.photobucket.com/albums/a129/2fast4sanity/image_zpscyuyojvg.jpeg
