Jump to content
SAU Community

Recommended Posts

Here is a graphic example of the problems associated, it starts at the divider (where there is lack of clamping) and this diminishes over time significantly as this part of the manifold distorts and falls away so to speak, then its a slippery slope to turbo hell.

Ironically its more of a problem in road cars that run all the time at 1.000 Lambda and non optimized ignition settings, remember 98% of the time in a street car literally is spent here, and EGT can get very high.

The secret is run the car with a bit of excess fuel here to cool the exhaust and you will increase durability 10 fold.

 

image.jpeg.305e09b91e398e96cd67380559b528b9.jpeg

image.thumb.jpeg.06c23bb4ea454667e94d374db48fa2a1.jpeg

It not an issue of bolt clamp loss rather the material distorts (on the manifold) and the turbine housing to a lesser degree, then its game over. I put above a worst case scenario and simple color chart shows that on the flat flange area the temps you can use an aviation product (I have worked with it to 750 deg C) on outer of flange!) typically this never gets over 550 deg C as its transferring allot of heat by that time to the surrounding engine bay air.

The whole problem though starts at the center divider where there is no/little chance for heat transfer and its more RAPE than Mr Fritzle family fun times.

16 hours ago, sneakey pete said:

Welp....

 

f**k.

 

IMG_20180921_161858921.thumb.jpg.0e526781ce12b571d9079ac9fdc2faa6.jpg

IMG_20180921_160829386.thumb.jpg.da0a8659a982271131080074a41c590e.jpg

IMG_20180921_160917897.thumb.jpg.bd31b5637fc156c967272fafd4eddca1.jpg

 

 

Seems like the gasket has gone through or at least into the inlet to the turbine. Not yet removed manifold but i'm expecting to find chunks of gasket sitting in it.

What are my options now?

 

damn dude, you're really not having much luck with this engine/turbo combo :(

Yeah its been a struggle. Has been in all of 12 months and 6-7000km and 2 track days.

 

I do wonder if bolts loosening have accelerated the process. Previous gasket i took off (after probably only 2000km) looked perfectly fine. Pretty sure this only blew out at the 2 sessions i got in at QR. The missing side of the gasket was on the looser side (nuts on studs instead of bolts).

Also I wonder if it was something with the tune also that may have not helped, unfortnatly my logging wasn't setup properly so I don't really have any useful info. Cruise wise EGT's aren't really that high for my setup currently as there hasn't been any setup completed on a wideband cruise, so thats probably not going to be it.

 

IMG_0009.thumb.jpg.3fbdb65c3649a9961190c7765da2114e.jpg[IMG_0011.jpgimg]http://cdn.sau.com.au/monthly_2018_09/IMG_0009.thumb.jpg.4fdf4843f28279d641774cbbcfc8cb6e.jpg[/img]

 

Street driven Rotary, bit of half throttle boost gets this hot. My gasket fell apart too!! Now it makes sense what RICE said, egt’s get really high just cruising, because it doesn’t as hot when you’re trashing it.

 

1 hour ago, Buraz said:

 

 

Street driven Rotary, bit of half throttle boost gets this hot. My gasket fell apart too!! Now it makes sense what RICE said, egt’s get really high just cruising, because it doesn’t as hot when you’re trashing it.

 

Yeah been around them too long (since 1995) first T04 set up. My current combo is a BW369SXE and Tial V'Band single entry housing, no gaskets or dividers to get chewed, have a great pic of one housing where the whole center divider was eroded away from thermal fatigue... split pulse is a nice idea but shite in practice I found.

Yeah been around them too long (since 1995) first T04 set up. My current combo is a BW369SXE and Tial V'Band single entry housing, no gaskets or dividers to get chewed, have a great pic of one housing where the whole center divider was eroded away from thermal fatigue... split pulse is a nice idea but shite in practice I found.

I’m actually going to a Borgy369SXE soon, Precision is getting tired and rear end is only .84 which is a bit small for a bridgey. I’ll look into the V Band option if that’s possible.
5 hours ago, burn4005 said:

Sparesbox have 20% off on eBay all the time but I'm not sure they actually can get their hands on them/have stock

Do yourself a favour and don't use sparesbox.

I waited 10 months for mine to arrive and it was always coming 'next week'. Even getting my money back was a pain.

  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Yeah good luck out there! Will be good to see a mighty GTST going harder than the GTRs
    • i will be there 😁
    • Hello!  i just finished manual swaping my r34 skyline with a r33 rb20de box(RB71C)box  When the car is running it squeaks crazy loud and it was smoking from the gearbox area. The gearbox is fine it was tested. The clutch slave cylinder seems like it doesn't fully releases the clutch. I want to ask if this noise is from the throw out bearing or could it be the clutch assembly or disk att.xFliq87Gzw6kImKBVqDebXkj0fBqymk0JaYeP3_3SlM.mp4
    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
×
×
  • Create New...