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Your input and experiences are greatly appreciated. I am one of the owners of DanZio Performace Engineering in California. I am running the only buggy with a 2JZgte that is known to exist. Some of you may have seen the videos on our web site. I chose this engine for my own personal car because of our experience with street cars and the great reputation of this engine being durable.
However, we have had more issues with this engine than any other engine we have ever had come through our doors. I love the power and want to keep running it, but I am about to take this thing out and chuck it in the trash if I can't figure out how to make this thing live for more than 2 weekends.
Just to get it out of the way, there are zero tuning issues or engine assembly. We have an in house mustang dyno, and I have tons of hours logged running and testing this thing on the dyno. Air fuel ratios are perfect.
I do however, beat the hell out of this thing. On a typical dune ride, this sucker will spend most of the time at @20 psi from 4500 to 7500 for up to 20 or 30 minutes at a time. This may be the problem. However before this is pinpointed to be the problem, we have zero problems running subarus or LS series Chevy engines in the same manner. They often last for years. We turn it up to around 30 psi for the sand drags which is @ 1/8th mile.
Here is a breakdown of the engine followed by associated problems.
Carrilo rods
JE pistons
Clevite bearings
Crower springs and retainers
Stock head and cams
ARP head studs
ATI damper
1000cc RC injectors
T-66 Turbo
First major failure. Was running the car at @ 30 psi for about 5 minutes in short burst one right after the other. Blew the head gasket & lost coolant very quickly. Warped the hell out of the head. Full rebuild with new head.
Next major failure. Running around 18psi. Was not beating on the car very hard. Punched it, ripped through a couple of gears, and lost a rod in #6 at about 7000prm. Parts came out on both sides and the botton of the block. Ruined it. We determined that it stuck the rod to the crank and broke it. There was bearing wear on #3 rod bearing as well.
Next failure. Another rod bearing. I can barely hear it knocking, and will have it tore apart by Friday to determine the damage. However it has deffinitly lost another bearing.
Constantly have leaky front main seals, but no signs of crank walk. We may be getting some sand in the seal, but can't make that determination for sure.
So I guess what I am asking is WTF???!! Do these things have oiling issues? Is there any one out ther that beats there car like this? I would equate it to a road racing type of condition. Is there anyone running a 2JZ in these types of extreme condtitions? If so, what are they doing to make it live. I am wondering if everything is just getting too hot and working to hard eventhough the coolant temp doesn't ever get above 210 F. My next thing is to put this thing on methenol to try and get this thing to live. Any suggestions, constructive comments or questions is appreciated. Pulling this thing out every two or three trip is getting real old and real expensive.
Josh
DanZio Performance Engineering
However, we have had more issues with this engine than any other engine we have ever had come through our doors. I love the power and want to keep running it, but I am about to take this thing out and chuck it in the trash if I can't figure out how to make this thing live for more than 2 weekends.
Just to get it out of the way, there are zero tuning issues or engine assembly. We have an in house mustang dyno, and I have tons of hours logged running and testing this thing on the dyno. Air fuel ratios are perfect.
I do however, beat the hell out of this thing. On a typical dune ride, this sucker will spend most of the time at @20 psi from 4500 to 7500 for up to 20 or 30 minutes at a time. This may be the problem. However before this is pinpointed to be the problem, we have zero problems running subarus or LS series Chevy engines in the same manner. They often last for years. We turn it up to around 30 psi for the sand drags which is @ 1/8th mile.
Here is a breakdown of the engine followed by associated problems.
Carrilo rods
JE pistons
Clevite bearings
Crower springs and retainers
Stock head and cams
ARP head studs
ATI damper
1000cc RC injectors
T-66 Turbo
First major failure. Was running the car at @ 30 psi for about 5 minutes in short burst one right after the other. Blew the head gasket & lost coolant very quickly. Warped the hell out of the head. Full rebuild with new head.
Next major failure. Running around 18psi. Was not beating on the car very hard. Punched it, ripped through a couple of gears, and lost a rod in #6 at about 7000prm. Parts came out on both sides and the botton of the block. Ruined it. We determined that it stuck the rod to the crank and broke it. There was bearing wear on #3 rod bearing as well.
Next failure. Another rod bearing. I can barely hear it knocking, and will have it tore apart by Friday to determine the damage. However it has deffinitly lost another bearing.
Constantly have leaky front main seals, but no signs of crank walk. We may be getting some sand in the seal, but can't make that determination for sure.
So I guess what I am asking is WTF???!! Do these things have oiling issues? Is there any one out ther that beats there car like this? I would equate it to a road racing type of condition. Is there anyone running a 2JZ in these types of extreme condtitions? If so, what are they doing to make it live. I am wondering if everything is just getting too hot and working to hard eventhough the coolant temp doesn't ever get above 210 F. My next thing is to put this thing on methenol to try and get this thing to live. Any suggestions, constructive comments or questions is appreciated. Pulling this thing out every two or three trip is getting real old and real expensive.
Josh
DanZio Performance Engineering