Pat's Ebay Turbo Compound Boost Build
10-13-2017, 08:14 AM
#1342
mkturbo.com
iTrader: (24)
Join Date: May 2006
Location: Charleston SC
Posts: 15,176
Total Cats: 1,680
Want to bring you car to Charleston October 21. There is a Halloween import 1/8 mile grudge race at the local drag strip. It is a bring what you have race. You would probably smash them all, and make an easy $700.
Reply
0
0
10-13-2017, 11:36 AM
#1345
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,295
Total Cats: 476
I hope not...
Reply
2
2
10-14-2017, 03:08 AM
#1348
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,295
Total Cats: 476
*** Anybody know how I'm supposed to stake or pin these axle nuts?
Got a lot done today, but it's not quite finished yet. 60mm wastegate is done and connected. I figured out (maybe, to be tested...) a way to simply control the wastegate and spool valve together, and hooked all that up and plumbed it. Basically I set the spring pressure on the spool valve a few PSI lower than the wastegate, and then hooked both bottom ports together and to the boost pipe, and both top ports to my boost controller. So hopefully I can adjust boost, and both will go up/down together with the spool valve doing it's transition consitently a few psi below the wastegate. Got the vehicle speed sensor mounted and it now doesn't hit anything. Got the exhaust finished, painted, installed, boost pipes in, made a bracket thingy to help protect some hoses from sagging and hitting the driveshaft. Basically a lot of boring reassembly stuff. Diff has synthetic oil, and I bought oil to change the motor too, gonna swap it to synthetic. Trans will need a top up as it lost some while the driveshaft was out.
Basically I THINK all the work under the car is done, or, almost done. All the turbo stuff is in. I gotta put my injectors back in, drain tank and fill with fresh fuel I just bought, clean IC pipes and put intake manifold back together, and a few little things, and put interior back together. I hope to drive it tomorrow night to a friends party... fingers crossed!
Few pics... I'm loving how it turned out, I think it looks awesome.
Got a lot done today, but it's not quite finished yet. 60mm wastegate is done and connected. I figured out (maybe, to be tested...) a way to simply control the wastegate and spool valve together, and hooked all that up and plumbed it. Basically I set the spring pressure on the spool valve a few PSI lower than the wastegate, and then hooked both bottom ports together and to the boost pipe, and both top ports to my boost controller. So hopefully I can adjust boost, and both will go up/down together with the spool valve doing it's transition consitently a few psi below the wastegate. Got the vehicle speed sensor mounted and it now doesn't hit anything. Got the exhaust finished, painted, installed, boost pipes in, made a bracket thingy to help protect some hoses from sagging and hitting the driveshaft. Basically a lot of boring reassembly stuff. Diff has synthetic oil, and I bought oil to change the motor too, gonna swap it to synthetic. Trans will need a top up as it lost some while the driveshaft was out.
Basically I THINK all the work under the car is done, or, almost done. All the turbo stuff is in. I gotta put my injectors back in, drain tank and fill with fresh fuel I just bought, clean IC pipes and put intake manifold back together, and a few little things, and put interior back together. I hope to drive it tomorrow night to a friends party... fingers crossed!
Few pics... I'm loving how it turned out, I think it looks awesome.
Reply
3
3
10-14-2017, 05:41 PM
#1354
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,295
Total Cats: 476
It runs! Strangely, it's having some electrical issues. One fuel pump is not working, and one fan is not working. The fan has a fancy PWM controller on it I built, and it's that part that isn't working I think on one of the fans. Funny enough I made that system twice so if one part failed on one fan, it wouldn't affect the other fan. Looks like that was a good idea, at least one fan still works! But it worked last time the car was driven, so it appears to have failed while sitting... Not sure on the pump, gotta look into that too.
Probably gonna drive it around the block soon and see if any major issues become apparent.
Probably gonna drive it around the block soon and see if any major issues become apparent.
Reply
0
0
10-15-2017, 04:56 AM
#1356
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,295
Total Cats: 476
Ok, small update. More electrical issues. This is pretty funny. I swap in a ton of hardware, and am greeted with electrical problems from unrelated systems. LOL.
So the dang EGR tube cracked, and blew hot exhaust gasses on some wiring for the injectors, and messed that up and blew a fuse. That was fun. Why it cracked is the real question, or, how long has it been cracked. I dunno. Will look into that later today when I wake up. if it's been cracked a while, then might see better spoolup with it fixed.
The 3.55's are pretty steep given that first gear is 2.46:1 ratio. Despite that, the highway RPMs dropped a good amount and that is very nice. The True-Trac LSD is wayyyy better than a MSM torsen ever was. This thing GRABS when you nail the gas. Very worth it.
Tomorrow the plan is to probably repair EGR thing, wiring it damaged, look into why one of my cooling fans is not working, and check all fluids and check for leaks or any abnormal signs. And hopefully get some more miles on everything. I don't even know what I put on it today, probably 20 at most.
New 80A mazda alternator is working ok, not fantastic, but ok.
Spool is improved, but i want to hesitate on saying how much till I get the EGR fixed and get some more miles on it, and turn up the boost, etc.
There are a couple of rattles I gotta fix, downpipe is hitting trans crossmember under heavy acceleration, will fix that tomorrow.
So the dang EGR tube cracked, and blew hot exhaust gasses on some wiring for the injectors, and messed that up and blew a fuse. That was fun. Why it cracked is the real question, or, how long has it been cracked. I dunno. Will look into that later today when I wake up. if it's been cracked a while, then might see better spoolup with it fixed.
The 3.55's are pretty steep given that first gear is 2.46:1 ratio. Despite that, the highway RPMs dropped a good amount and that is very nice. The True-Trac LSD is wayyyy better than a MSM torsen ever was. This thing GRABS when you nail the gas. Very worth it.
Tomorrow the plan is to probably repair EGR thing, wiring it damaged, look into why one of my cooling fans is not working, and check all fluids and check for leaks or any abnormal signs. And hopefully get some more miles on everything. I don't even know what I put on it today, probably 20 at most.
New 80A mazda alternator is working ok, not fantastic, but ok.
Spool is improved, but i want to hesitate on saying how much till I get the EGR fixed and get some more miles on it, and turn up the boost, etc.
There are a couple of rattles I gotta fix, downpipe is hitting trans crossmember under heavy acceleration, will fix that tomorrow.
Reply
0
0
10-16-2017, 11:22 AM
#1357
Elite Member
iTrader: (1)
Join Date: Apr 2014
Location: SF Bay Area, CA
Posts: 3,075
Total Cats: 551
Dang, haven't heard of a cracked EGR pipe burning those wires before, crazy.
Glad to hear the diff hooks up so well, there's your sub 3 0-60. Maybe 1.4 60', careful, the guys doing that say they get a headache from 5 or 6 of those launches.
Glad to hear the diff hooks up so well, there's your sub 3 0-60. Maybe 1.4 60', careful, the guys doing that say they get a headache from 5 or 6 of those launches.
Reply
0
0
10-17-2017, 03:46 AM
#1358
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,295
Total Cats: 476
Having some motor issues, looking for some quick advice, I made a thread about my bearing problems here: https://www.miataturbo.net/engine-pe...3/#post1446061
Hoping to throw some new bearings in it and keep going, at least till racing season is over.
Hoping to throw some new bearings in it and keep going, at least till racing season is over.
Reply
0
0
