I installed a TRD/Kazuma Supercharger on my 1993 Land Cruiser a few years ago and have experienced pinging/detonation problems at hard acceleration and/or when the truck is running hot during the summer months in Las Vegas. Now the head gasket has gone out as well, although it only has 10K miles on the rebuild. Does anyone have any suggestions as to how to stop the pinging/detonation? Also, any suggestions on keeping the engine cool during heavy loads or in the summer time. Finally, is there a heavy duty head gasket set out there I can buy? I would humbly appreciate any advice anyone may have on these topics. Thanks in advance.
Supercharged FZJ80 Detonation and Overheating Issues (1 Viewer)
- Thread starter silverstatelegal
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You could water/methanol injection with a 7th injector
are you running hi test fuel? maybe retard the timing
3FE fan and mod your fan clutch at a minimum
Make sure your fan shroud is sealed all the way around
Make sure you have the foam at the top front of your radiator between radiator support
Remove the water bypass from your throttle body
The above will help a lot.
Make sure your fan shroud is sealed all the way around
Make sure you have the foam at the top front of your radiator between radiator support
Remove the water bypass from your throttle body
The above will help a lot.
Intercooling.
you are pinging because your intake air is hot from compression. Also get a temp gauge so you can see accurate engine temps.
Has your radiator been changed?
you are pinging because your intake air is hot from compression. Also get a temp gauge so you can see accurate engine temps.
Has your radiator been changed?
- Thread starter
- #6
Is there a bolt on intercooler available?
The '93-94 will run lean with the supercharger. This will cause high exhaust gas temps (EGT), pinging, overheating, and may melt your pistons. I would recommend getting a EGT gauge and watching your temps.
Options are water/methanol injection or 7th injector.
Options are water/methanol injection or 7th injector.
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Throwing money to get your intake temps down sure won't hurt but I would definitely baseline it with what is stated above. Find out where it is running so you know the best way to fix it.
[QUOTE/] I would recommend getting a EGT gauge and watching your temps. Options are water/methanol injection or 7th injector.[/QUOTE]
I would go with a wide band afr setup for monitoring. You can always try a rising rate regulator before diving into the additional injector or the water inject. Bell Engineering/ BEGI makes the best one by far. Might be a used one on ebay; I picked one up there a while back for another project.
I would go with a wide band afr setup for monitoring. You can always try a rising rate regulator before diving into the additional injector or the water inject. Bell Engineering/ BEGI makes the best one by far. Might be a used one on ebay; I picked one up there a while back for another project.
As other experienced members have posted on this mud forum, the 93/94 with the vein type air flow meters run out of fuel as the meters can not read (they top out) the additional air from the SC. These old girls therefore run lean as earlier stated in this thread. Water / methanol is a method that can help. Cruiserdan has run this method for some time now.
I have added 2 additional injectors to provide more fuel. This is controlled via a piggy back computer which also retards timing based on boost pressure read via a MAP sensor. Read expensive option, though good results re no over heating or pinging and strong power output.
Others have added timing control modules to reduce ping and others again have moded their flow meters to provided more fuel. There is plenty of info on the forum to help you through bud.
I hope this summary may help lead you to a solution.
Cheers
CC
I have added 2 additional injectors to provide more fuel. This is controlled via a piggy back computer which also retards timing based on boost pressure read via a MAP sensor. Read expensive option, though good results re no over heating or pinging and strong power output.
Others have added timing control modules to reduce ping and others again have moded their flow meters to provided more fuel. There is plenty of info on the forum to help you through bud.
I hope this summary may help lead you to a solution.
Cheers
CC
inkpot
SILVER Star
Upgrading the cooling system fan and fan clutch are good ideas. Keep ignition timing at stock settings. Mine stays pretty cool this way even at 110+ temps, and I don't have any knocking problems.
So what kind of EGT readings are acceptable? What kind of temps do you see on long uphill grades in the summer? John
It needs more fuel than the stock managenment can provide and the cooling system must be functioning at 100% efficency.
I have been running methanol/water injection for ~9 years and ~100,000 miles. I also run platinum MR2 turbo plugs that are one heat range colder than stock.
I have been running methanol/water injection for ~9 years and ~100,000 miles. I also run platinum MR2 turbo plugs that are one heat range colder than stock.
