Finally my 1st (water cooled) turbo build
#763
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
some investigation today- Tops of pistons look fine, as viewed from the plug hole with a flashlight. plugs 1 & 3 look good, 2 & 4 have not been firing. I am running batch fire ignition, Dwell set @ 3.5ms.. maybe the coils took a dump?
This is the same condition I experienced a year ago, when I decided to swap turbos. I had chalked it up to the 40% leakdown, apparently maybe not. I guess Ill run a test in TS to check spark output, but that only narrows it down to what I already know, I think. wiring, coils..time will tell.
EDIT: wire harness to coils checks out good.
This is the same condition I experienced a year ago, when I decided to swap turbos. I had chalked it up to the 40% leakdown, apparently maybe not. I guess Ill run a test in TS to check spark output, but that only narrows it down to what I already know, I think. wiring, coils..time will tell.
EDIT: wire harness to coils checks out good.
Last edited by ryansmoneypit; 11-01-2017 at 08:54 PM.
#764
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
FIXED !
Found that on the oem harness plug to the coils, one of them had been severed, but still covered by shrink tube. So, intermittent power to a coil / pair. The good news is that in my quest to find this problem, I converted to full sequential ignition. I guess I should also be thankful that these things are popping up at home, not at the track.
on a side note, I also noticed that I have a very noisy signal for battery voltage. I am grounded out on the front of the engine with all of the other grounds.
Found that on the oem harness plug to the coils, one of them had been severed, but still covered by shrink tube. So, intermittent power to a coil / pair. The good news is that in my quest to find this problem, I converted to full sequential ignition. I guess I should also be thankful that these things are popping up at home, not at the track.
on a side note, I also noticed that I have a very noisy signal for battery voltage. I am grounded out on the front of the engine with all of the other grounds.
#768
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Well after the V8R crooked engine debacle, she is finally out strutting around. Everyone should at some point, get to drive an EFR miata on 20psi. It's just amazing. New SuperMiata race alignment is fantastic, so much fun to drive now. Sooooo, who want's to buy the engine/turbo package?
#772
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
To fund K swap. If enough interest is shown, its all up for sale.
To be completely honest, this thing is too fast for the street for the state of Virginia. It has to be driven with street bike mentality. I cant drive it after 1 beer. Had my wife drive me home in it last week (cause i had 3 beers) and my town looks like a commercial runway now. 100 foot black stripes at every intersection and gear change..She thought it was fun, i was looking out the back window the whole time for cops.
To be completely honest, this thing is too fast for the street for the state of Virginia. It has to be driven with street bike mentality. I cant drive it after 1 beer. Had my wife drive me home in it last week (cause i had 3 beers) and my town looks like a commercial runway now. 100 foot black stripes at every intersection and gear change..She thought it was fun, i was looking out the back window the whole time for cops.
#774
Elite Member
iTrader: (2)
Join Date: Aug 2016
Location: New Fucking Jersey
Posts: 3,890
Total Cats: 143
To fund K swap. If enough interest is shown, its all up for sale.
To be completely honest, this thing is too fast for the street for the state of Virginia. It has to be driven with street bike mentality. I cant drive it after 1 beer. Had my wife drive me home in it last week (cause i had 3 beers) and my town looks like a commercial runway now. 100 foot black stripes at every intersection and gear change..She thought it was fun, i was looking out the back window the whole time for cops.
To be completely honest, this thing is too fast for the street for the state of Virginia. It has to be driven with street bike mentality. I cant drive it after 1 beer. Had my wife drive me home in it last week (cause i had 3 beers) and my town looks like a commercial runway now. 100 foot black stripes at every intersection and gear change..She thought it was fun, i was looking out the back window the whole time for cops.
#775
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Three years in the making. I went ot VIR monday for the debut of Ryansmoeypit miata. I turned down the boost to wastegate pressure (about 13-14psi) it was fast and none of the 911's could ditch me. with the 6 speed and 4.1 rear gears it was good for 130 mph @7k rpm. i was able to get to 130 in less than 1,000 feet heading down the straights, so that left me with about 3,800 feet in the straight to twiddle my thumbs.
Long story short, the engine melted down at about lap 50. Exiting turn 12 down the straight, at exactly 130 mph, there was a mild "pop" noise and the cab instantly filled with smoke. I lost piston #1 to unknown cause, at this time. safe tune, low boost, plugs looked perfect. Maybe it was the excessive life at 6-7k rpm.
IMO a miata just doesnt need 300 hp to run track. I rarely used more than 1/2 throttle. 5th and 6th gear at 4-7k rpm was just too much power. No aerodynamic adders and up the esses I was about 100-110 mph.
So everyone get your money together, cause I got some real nice parts that will be for sale asap.
Long story short, the engine melted down at about lap 50. Exiting turn 12 down the straight, at exactly 130 mph, there was a mild "pop" noise and the cab instantly filled with smoke. I lost piston #1 to unknown cause, at this time. safe tune, low boost, plugs looked perfect. Maybe it was the excessive life at 6-7k rpm.
IMO a miata just doesnt need 300 hp to run track. I rarely used more than 1/2 throttle. 5th and 6th gear at 4-7k rpm was just too much power. No aerodynamic adders and up the esses I was about 100-110 mph.
So everyone get your money together, cause I got some real nice parts that will be for sale asap.
Last edited by ryansmoneypit; 10-15-2019 at 10:49 AM.
#778
Elite Member
iTrader: (13)
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 6,603
Total Cats: 564
Damn man, sorry to hear this.
I've had mine at 3 track days now since my build, regularly seeing rev limiter, hope she holds up. Time will tell.
At least now you can get that k-swap you were dreaming about!
I've had mine at 3 track days now since my build, regularly seeing rev limiter, hope she holds up. Time will tell.
At least now you can get that k-swap you were dreaming about!
#779
Elite Member
Thread Starter
iTrader: (6)
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Phase 1 of my wind tunnel. This is for real. Twin 500c.i. V8 engines turning 80" carbon props, all blowing through a wall of flow straighteners. Will make 100 mph sustained wind.