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First update this year
the last rebuild lasted about one week, sadly the head was cracked, the water on cyl. 3 was not HG's fault :sadwavey: so.. I bought an ms3x kit, an ecu connector, a vvt head and a new set of gaskets, and yesterday it ran for the first time in months! :party: https://cimg3.ibsrv.net/gimg/www.mia...0173abcddc.jpg But now I have a problem... I can't get rid off the vvt1 error displayed, and the vvt is not working. If I run the test mode I can use the actuator, and it works (the engine runs very bad as advance is increased at idle), but seems that this error "locks" in some way the vvt output I can't find anything in the manual, did someone experienced this issue? Everything else runs fine https://cimg4.ibsrv.net/gimg/www.mia...fe1b6d69b.jpeg |
Do you get the VVT error1 when car is just keyed on or actually running? What firmware are you on?
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Originally Posted by shuiend
(Post 1395342)
Do you get the VVT error1 when car is just keyed on or actually running? What firmware are you on?
the firmware is the lastest, 1.5.0 I verified the timing 5 minutes ago, it was fine |
I found the issue, I had to play with minimum and maximum degrees:
adjusted minimum since advance was zero degrees with zero duty cycle maximum was minimum plus 45 degrees Now it works fine :x: |
It's time for some updates
During the time I ran the car with water on cyl. #3 I damaged the piston. Not that much, but enough to save some money and do a rebuild with fresh pistons, bearings and rings. Oh, and a new block since old one was off by 0.01mm because it ran for 80.000 since turboed :bowdown: That's the new block (nbfl one, with bigger thrust washer.. doh!), bored and resurfaced to accomodate 84.00 mm supertech's https://cimg3.ibsrv.net/gimg/www.mia...42fde25b2a.jpg https://cimg4.ibsrv.net/gimg/www.mia...469791ee63.jpg bought another crank from a vvt engine, ARP and acl race (these from trackspeed)https://cimg5.ibsrv.net/gimg/www.mia...4ec92a08a5.jpg Started the assembly and stopped because I had to order the vvt thrust washer :hatecat: https://cimg6.ibsrv.net/gimg/www.mia...d71c516f82.jpg https://cimg7.ibsrv.net/gimg/www.mia...71025b7819.jpg |
Waiting for the washer, I started working on the wiring, deleting the lpg ecu, wiring and sensors and letting the ms3x to control directly the lpg injectors, using a couple of relais to switch the outputs, and a resistor box to increase impedance
https://cimg5.ibsrv.net/gimg/www.mia...5c40be5736.jpg Added some gauges also: innovate for oil temperature and pressure, plx for afr ratio and depo for EGT https://cimg4.ibsrv.net/gimg/www.mia...c2444df618.jpg Started assembling piston and gapping rings https://cimg1.ibsrv.net/gimg/www.mia...48eb799039.jpg and... it arrived!! The last piece of the puzzle! (yeah, of course:giggle:) https://cimg3.ibsrv.net/gimg/www.mia...3034c4976e.jpg |
The car was stop by almost 5 months at this moment, so I decided to buy a stock vvt engine to ran the car during this eternal build.
Oh, and an european squaretop manifold This is the relocation for lpg injectors https://cimg3.ibsrv.net/gimg/www.mia...d72b88dd98.jpg https://cimg2.ibsrv.net/gimg/www.mia...fe0b037368.jpg the stock vvt https://cimg4.ibsrv.net/gimg/www.mia...4d66df685.jpeg time to work for additional wiring: -lpg injectors -C and D coils (full sequential from now on) -grounds for lpg electro-valves -new wiring for mishimoto heavy duty 11" fans -lpg tank level signal -oil pressure and temperature sensors -wideband -lpg pressure and temperature sensors https://cimg7.ibsrv.net/gimg/www.mia...aa4d2ac408.jpg https://cimg8.ibsrv.net/gimg/www.mia...ef475f3867.jpg I ran it n/a for the moment, since the 6758 and 1 bar wastegate is too much for it https://cimg8.ibsrv.net/gimg/www.mia...4bc3b1cbac.jpg On the left the relay and fuse box for fans and lpg electrovalves https://cimg9.ibsrv.net/gimg/www.mia...998139b336.jpg mishimoto dual core radiator and 11" fans https://cimg7.ibsrv.net/gimg/www.mia...b509c0c4a1.jpg |
lpg setup - this is really interesting. @patsmx5 will likely be very interested in this.
perhaps you can share some more info about it? |
Originally Posted by 18psi
(Post 1457082)
lpg setup - this is really interesting. @patsmx5 will likely be very interested in this.
perhaps you can share some more info about it? After the reducer I'm using a set of 4 apache IG1 injectors with 4mm noozles https://www.ebay.it/itm/IG1-Apache-4...kAAOSw4GVYIZNu Cheap, but worth only 55 kW per cylinder. Exphensive alternative is the landi bigger ones that worth 85 kW per cylinder, amazing!!, but exphensive, more than ID1050's To drive directly these injectors (really low impedance: 2 ohms) I made an external module to drive them in peak and hold, a switch drives the relay box to switch injectors, opens all the electrovalves and puts to ground the tableswitch pin. After, the ms3 has the dual fuel activated, so no enrichment at all is activated, since the lpg does not need any. Easy enough? Oh, and with the same advance table, I've got around 10hp more on lpg on virtualdyno, this with stock engine and n/a :giggle: |
I continued to assembly the engine:
https://cimg0.ibsrv.net/gimg/www.mia...6649defcb0.jpg https://cimg9.ibsrv.net/gimg/www.mia...4b22abeabe.jpg https://cimg8.ibsrv.net/gimg/www.mia...40a8ad2915.jpg billet oil pump: https://cimg8.ibsrv.net/gimg/www.mia...0f0c5e518e.jpg https://cimg9.ibsrv.net/gimg/www.mia...a549e64fe6.jpg modified the vvt plate for arp mains https://cimg5.ibsrv.net/gimg/www.mia...1f9aa1bba.jpeg and... bottom end: done! https://cimg4.ibsrv.net/gimg/www.mia...93d27b042c.jpg https://cimg6.ibsrv.net/gimg/www.mia...afbb863f1f.jpg Oh, meanwhile I bought my first 3d printer: the tevo tarantula! here I'm printing some miata accessories: https://cimg2.ibsrv.net/gimg/www.mia...8e87978240.jpg https://cimg1.ibsrv.net/gimg/www.mia...5716fa9257.jpg https://cimg0.ibsrv.net/gimg/www.mia...2cc4800527.jpg Remember when I talked about the p&h drivers? Well.. dead time for the apache injectors was around 8 ms (massive!) with the resistor box, so I made this board: https://cimg3.ibsrv.net/gimg/www.mia...ccc67b73d2.jpg https://cimg4.ibsrv.net/gimg/www.mia...bcaec3354d.jpg It's completely stand-alone: internally regulated, active flyback protected, and configured to give full duty since reaching 1A or 3ms. Now the car can even start on LPG without any issue :jerkit: After that, I finished the engine bay wiring and installed the mishimoto radiator+fans combo The fans are incredibly powerful!! I think I will never have any problem with I/C+ a/c in the summer https://cimg7.ibsrv.net/gimg/www.mia...8a96e142f4.jpg Finally running again! (sooo slow) https://cimg6.ibsrv.net/gimg/www.mia...5229b6f38e.jpg https://cimg7.ibsrv.net/gimg/www.mia...b1bef8840c.jpg |
Time to assemble the head (I ran really rich last time)
https://cimg4.ibsrv.net/gimg/www.mia...c452a64eec.jpg cometic HG https://cimg2.ibsrv.net/gimg/www.mia...211f47be2f.jpg https://cimg0.ibsrv.net/gimg/www.mia...102f40020e.jpg gates water pump https://cimg5.ibsrv.net/gimg/www.mia...4c2610c2df.jpg aaand, the best piece I made with the tarantula! https://cimg1.ibsrv.net/gimg/www.mia...7bb27ab963.jpg https://cimg8.ibsrv.net/gimg/www.mia...90db03cede.jpg bought flywheel arp's because, why not https://cimg5.ibsrv.net/gimg/www.mia...e9254ca57f.jpg a little reminder for me :rolleyes: https://cimg6.ibsrv.net/gimg/www.mia...0114e160f.jpeg |
This time I choose the act xt 6 puck, competition clutch stage5 cannot handle over 300hp
https://cimg3.ibsrv.net/gimg/www.mia...46e4ac1844.jpg Preload is like double the competition clutch one https://cimg4.ibsrv.net/gimg/www.mia...ac690c2808.jpg And there's a spring more. No doubt this will handle all the torque https://cimg8.ibsrv.net/gimg/www.mia...05849a12df.jpg Stock engine out https://cimg9.ibsrv.net/gimg/www.mia...add9499249.jpg https://cimg0.ibsrv.net/gimg/www.mia...c506e5a503.jpg and built engine in! https://cimg1.ibsrv.net/gimg/www.mia...dfd1260a8.jpeg Of course I forgot something... dat evil plug behind timing cover! https://cimg2.ibsrv.net/gimg/www.mia...c1889c10c6.jpg Everything back in place. Breack in will be made naturally aspirated https://cimg3.ibsrv.net/gimg/www.mia...f2fd9fe2f6.jpg Since alternator was very often near 80-100% (fans absorb 25A each) I bought an FD alternator https://cimg4.ibsrv.net/gimg/www.mia...72e97236a6.jpg It's literally plug'n play, only difference is it's regulated internally at 14.5V https://cimg3.ibsrv.net/gimg/www.mia...72d805054f.jpg https://cimg6.ibsrv.net/gimg/www.mia...3033090d15.jpg This is the current state of new build. I made around 300 km, but will wait till a thousand to reinstall the efr I'm waiting a set of ID1050, a turbosmart dual port actuator (I have in mind to activate the ms traction control), and a hondata 4 port solenoid, just to lower the minimum boost I can run. I can't wait to finish the breack in, it's since march I don't drive it :D |
I'm stuck at the moment with a tuning issue...
didn't the low compression engines can handle more timing? A log of the 77xxx miles, completely stock vvt engine https://cimg8.ibsrv.net/gimg/www.mia...4b9a7d577c.png Built engine, same tune (tuned ve table of course) and same condition: knock everywhere. Just 10.5:1 vs. 8.6:1 pistons https://cimg7.ibsrv.net/gimg/www.mia...2864a41da9.png https://cimg2.ibsrv.net/gimg/www.mia...fe0b40ad05.jpg |
Check base timing again with the strobe light. Be sure timing belt marks are aligned correctly, too.
Even with the same ve table it may run richer or leaner and require Auto tuning to reach the same AFR as before. Cooler temperatures can make more power and sometimes cause more power or more boost at the same RPM and detonate. Also a dirty injector can cause this by not having a good spray pattern or not flowing as much and being individually lean on one cylinder. Those are the first things that come to my mind. I'm sure there are more. Pull the spark plugs and look to see if any of them look different. |
Turned out the issue was... well... a loose exhaust hanger that resonated at that rpm :giggle:
Breack in is done and street tuned with turbo fitted that thing is FAST. |
I've had two issues last week..
stock fpr vacuum hose pops out every time I ran more that 21psi, leaning to 19:1 under boost stock efr bov makes weird noises over 20 psi www.youtube.com/watch?v=lg9fhMZIlv8 I saw something aftermarket like the turbosmart https://www.ebay.it/itm/Turbosmart-K...cAAOSw0HVWADIo does it fit the 6758? |
Originally Posted by DNA54
(Post 1461768)
I've had two issues last week..
stock fpr vacuum hose pops out every time I ran more that 21psi, leaning to 19:1 under boost stock efr bov makes weird noises over 20 psi www.youtube.com/watch?v=lg9fhMZIlv8 I saw something aftermarket like the turbosmart https://www.ebay.it/itm/Turbosmart-K...cAAOSw0HVWADIo does it fit the 6758? |
Originally Posted by sixshooter
(Post 1461776)
With the FPR reference hose, use a very small zip-tie on all of those small vacuum hoses to keep them from pushing off.
remember back in 2016 when ian built a can display with a nextion and an arduino? I'm working on my version: very interesting display https://cimg3.ibsrv.net/gimg/www.mia...802ffcb0d.jpeg that's the warning for high EGT's :giggle: |
I love it!
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The display is finished! Only issue was that the temperatures are send in farenheit via can, but it's easy to convert them before they are sent to the nextion
I'm stuck at around 300 whp because of 750's limit.. so I bought a set of ID1050, DW300 pump and AEM fpr with an6 lines and fittings Oh, and a oil cooler with mocal, beefy AN10 lines and black nylon pipe https://cimg8.ibsrv.net/gimg/www.mia...ca469c9c0d.jpg https://cimg9.ibsrv.net/gimg/www.mia...f8a6d4fbef.jpg https://cimg0.ibsrv.net/gimg/www.mia...eeaa0ae97f.jpg But the car also started to misfire after 200kPa. gapping the spark plugs to 0.6mm didn't solve the problem completely, so probably the issue was related to spark plug wires https://cimg2.ibsrv.net/gimg/www.mia...b9a582366.jpeg https://cimg3.ibsrv.net/gimg/www.mia...a32a7b1a0.jpeg https://cimg4.ibsrv.net/gimg/www.mia...2ef79f789.jpeg https://cimg5.ibsrv.net/gimg/www.mia...957cf26c2.jpeg https://cimg6.ibsrv.net/gimg/www.mia...efc4edb796.jpg https://cimg1.ibsrv.net/gimg/www.mia...bc4ba743ca.jpg https://cimg7.ibsrv.net/gimg/www.mia...875e7f4060.jpg and while I'm waiting for a set of iridium spark plugs, I installed these extended reach spark plugs, equivalent of bkr7e, but with the spark 4mm more closer to the piston https://cimg4.ibsrv.net/gimg/www.mia...6ea32548fb.jpg https://cimg5.ibsrv.net/gimg/www.mia...133d65082.jpeg It's the first time I do a job like this, I know it could be done better, but now misfire was vanished even at 350 kPa (creeped while tuning for CL ebc), so I'm done with ignition now |
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