4g93 Mivec Turbo Waja project(Many pictures be warned)
- Thread starter Nightstalker1993
- Start date
Yala all kena con thanks to your nick haha.They also talking about VR2 mini pajero......lol
Anyway, some updates on my car. Sent my car in to custom make a heatshield for me turbo manifold, hopefully will reduce my under hood temps and hopefully reduce the chances of the power steering pump boiling over. The fabricator also said that my grill and hood design is really quite bad for airflow and advised me to have some hood venting to reduce the underhood temps even more so will see how to approach that in the future. My whole engine bay is between 70-80c according to my IR heat gun so it does get really hot in there.
Anyway, helped my friend measure his cylinder and head chamber cc to calculate his 4g15 compression ratio, here's a short time-lapse
https://youtu.be/VLI2PM6Bacc
Wrapped some bits of my turbo water cooling hose with some heat resistant sleeve as it's too near the manifold.
Just got my heatshield done, looks awesome!
Underhood temps feel alot cooler now. Hopefully my power steering won't boil over now :hmmm:
Just got my heatshield done, looks awesome!
Underhood temps feel alot cooler now. Hopefully my power steering won't boil over now :hmmm:
marsha1l_v6
500 RPM
nice exhaust shield..
waja no case on tearing at engine mount? Anyway, where do u buy depo sensor...is it reliable? especially oil temp/press...
waja no case on tearing at engine mount? Anyway, where do u buy depo sensor...is it reliable? especially oil temp/press...
Currently using solid rubber engine mounts at the cross member. I don't think the engine moves that much as my turbo actuator had not contacted my radiator yet
Depo I'd say is OK for the price and the quality is pretty good too. Currently using their wideband and EGT sensor.
sanekit
1,500 RPM
where did you custom the heatshield and how much if it if u dont mind sharing?
Depo is quite reliable. Accuracy seems pretty close to what the ECU reads so I find it reliable. Price may have risen since sometime ago. I bought my three-in-one and vacuum almost 3-4 years ago.
Yeah I wanna know toowhere did you custom the heatshield and how much if it if u dont mind sharing?
where did you custom the heatshield and how much if it if u dont mind sharing?
Depo so far the issues I had, the older wideband the segmented LED digit display die off one segment at a time until I can no longer read the reading. The 4-in-1 meter works well, but after many years the OLED display starts to dim which I expect might happen to my current wideband as well which uses an OLED display, but at least now the OLED display is a seperate unit with the main controller and should be easily replaced if it does happen. And also their touch-sensitive buttons on certain models tend to get hyper sensitive after a few months use and will press itself while driving.
Accuracy and response wise all is good, the stepper motor they use for the needle seems to be of high quality unlike the cheapo fakes which moves slowly. But as mentioned, only thing I can see is a lower quality compared to the branded ones double or triple it's price but that seems to be improving now as I think there is a new range of gauges. I will still buy Depo gauges for their value for money.
Got the heatshield done at a guy named Saidi. Can find him on FB Saidi SRF. If you know Hongzai the guy doing Subaru and Kia Carnival converts wan, it's right behind his shop.
sanekit
1,500 RPM
Well, the crack actually has quite a measurable gap, my theory is that it warped somehow and the forces caused it to fail at the weakest point(welds). Have to remove it and get it welded back 
It's only cracked on 1 place, just one of the runners to the collector, but it's cracked a full circle.....Wow! many areas cracked.....
marsha1l_v6
500 RPM
sorry to hear that...luckily i listen to my mechanic..last time die die wanna buy banana...
now cast iron only..cast iron FTW
now cast iron only..cast iron FTW
Well, if it's well made then a banana might improve performance, but yeah daily driven just stick with good old reliable cast iron manifold
Yes vibration could be a factor that increases the fatigue, I have one of the bolts off the turbo heat shield fell off after some boosting sessions after I tightened it down myself...Could be the vibration and the weakest point cracked.....
Anyway, some minor update.
Last CNY I experienced aircond feeling warm and the water temp increased slightly on my gauge, when sitting in a standstill traffic jam entering a parking lot for 15 minutes under the 1pm super hot sun, the temps fell immediately after I turned off the ac and then the traffic started moving and my aircond temperature started to improve, so from there I suspected I have an issue with my cooling fans. Went to install tints on my front windshield as I torn that out when I went to Puspakom, and still my aircond felt like it wasn't as cool as before.
After some looking around, this seems to be one of the possibilities, there is a large gap between the radiator and the body, where on the original radiator the gap is much smaller, I suspect the air might be recirculating, meaning instead of sucking in fresh cool air from outside, the radiator fan was pulling in hot air from the engine bay instead.
Did a quick mcgyver solution to fix that
And driving around these few days, my aircond seems to be cooler now when driving after parked under the hot sun and when in standstill traffic under the hot sun. Next step would be to replace my AVS pusher fan on the driver side to a SPAL fan and hope it solves my issue. Will also apply some foam surround between the radiator and condenser to make sure more air actually flows between the condenser/radiator instead of bypassing it through the sides. Will update again when i find the time to do those....
Last CNY I experienced aircond feeling warm and the water temp increased slightly on my gauge, when sitting in a standstill traffic jam entering a parking lot for 15 minutes under the 1pm super hot sun, the temps fell immediately after I turned off the ac and then the traffic started moving and my aircond temperature started to improve, so from there I suspected I have an issue with my cooling fans. Went to install tints on my front windshield as I torn that out when I went to Puspakom, and still my aircond felt like it wasn't as cool as before.
After some looking around, this seems to be one of the possibilities, there is a large gap between the radiator and the body, where on the original radiator the gap is much smaller, I suspect the air might be recirculating, meaning instead of sucking in fresh cool air from outside, the radiator fan was pulling in hot air from the engine bay instead.
Did a quick mcgyver solution to fix that
And driving around these few days, my aircond seems to be cooler now when driving after parked under the hot sun and when in standstill traffic under the hot sun. Next step would be to replace my AVS pusher fan on the driver side to a SPAL fan and hope it solves my issue. Will also apply some foam surround between the radiator and condenser to make sure more air actually flows between the condenser/radiator instead of bypassing it through the sides. Will update again when i find the time to do those....
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