CrAnSwIcK's 4G69 Build: Phase 2
Sep 26, 2015, 07:47 PM
#451
I have some good news. After disassembly and very careful inspection, I have determined that the turbo seems to unharmed. Initially I was concerned because there were some metal bits in the exhaust manifold, but it looks like the amount of oil that went with them prevented them from being sucked through the turbine because the turbine looks fine, no dings, not even a single scratch. That being said I figure the center section should be ok because any oil with metal bits would be in the filter and should never have entered the turbo's center section.
Sep 28, 2015, 07:21 PM
#452
as promised...here are some carnage pictures for your viewing pleasure 
here are some metal bits I found in the turbo manifold...
here is a strange piece of metal I found dangling behind the starter...what in the heck is it?
OH! it's the bottom of the rod! what's that doing there? isn't that supposed to be inside the motor?
It wanted to get out, but the starter did a pretty good job keeping it in...
escape route...also note the upside down piston jammed between crankshaft webs...
hole is bigger than exhaust ports I think...
couldn't help myself...got the magnetic retriever and found some more treasure
close ups:
top of connecting rod
wrist pin
here are some metal bits I found in the turbo manifold...
here is a strange piece of metal I found dangling behind the starter...what in the heck is it?
OH! it's the bottom of the rod! what's that doing there? isn't that supposed to be inside the motor?
It wanted to get out, but the starter did a pretty good job keeping it in...
escape route...also note the upside down piston jammed between crankshaft webs...
hole is bigger than exhaust ports I think...
couldn't help myself...got the magnetic retriever and found some more treasure
close ups:
top of connecting rod
wrist pin
Sep 29, 2015, 10:07 PM
#456
well I made 213whp at 6.5psi at like 5400rpm on a 14b...I would think 16psi from a 20g should make more than 300whp in a 2.4L MIVEC...I think I may have just pushed it a little too far...plus 4 years of hard miles...it's a stock N/A block...a stock 7 bolt 4G63T will hold up over 400hp, there are reasons for that, and I think the main one is piston design, and piston cooling.
Oct 2, 2015, 08:18 AM
#459
Just trying to be helpful here: I thought the evo has underpiston oil cooling (just a little pipe that shoots a stream of oil)? If so, it's worth researching if it can be retrofitted on your future built engine. Common now on high hp/liter street bikes due to the heat issue. Also, cast pistons have higher hot strength that forged items (best to double check but I believe that is true).
Oct 2, 2015, 08:30 AM
#460
Yea Garrett showed it to me once before. The oil squirters can be added to the 4g69. The oil passage is there it just needs to be tapped into and have the squirters threaded in.
On a side note that 800hp 4g69 that mitsuorder built. He used forged conrods and pistons but he never added the oil squirters. It would make sense to add them for safety sake thought.
On a side note that 800hp 4g69 that mitsuorder built. He used forged conrods and pistons but he never added the oil squirters. It would make sense to add them for safety sake thought.
Oct 2, 2015, 06:24 PM
#461
yes, all 4G6x block have the same oil passage that can be drilled and tapped for oil squirters...i have been thjinking about this a lot lately, but i think the main problem with our stock pistons is the narrow top ring land...
back to the drawing board...
back to the drawing board...
Nov 24, 2015, 02:07 PM
#464
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Wow, this is insane. I just read up on everything that happened...
I guess 'NEVER GIVE UP!' is your NINDO (ninja way) as well!!!
We love our Ralliarts and making them better and better is just the tip of the iceberg.
I know I have been trying to set up a date to meet at your place but I've been so caught up with life and work here. I've been doing some work on my RA (check my thread
) and I'm very happy with the progress.
I'm glad to see that your RA is doing fine. Endless possibilities! Can't wait to come over sometime! Keep us posted alright?
Take care brother!
I guess 'NEVER GIVE UP!' is your NINDO (ninja way) as well!!!
We love our Ralliarts and making them better and better is just the tip of the iceberg.
I know I have been trying to set up a date to meet at your place but I've been so caught up with life and work here. I've been doing some work on my RA (check my thread
) and I'm very happy with the progress.I'm glad to see that your RA is doing fine. Endless possibilities! Can't wait to come over sometime! Keep us posted alright?
Take care brother!