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Borg Warner EFR Series Turbo's V 2.0

Piggaz

By Piggaz,
in Engines & Forced Induction

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HarrisRacing
HarrisRacing

Note to all. Finally moved my cam gears on the dyno. Spent 4 hours there yesterday (on a dynocomm inertial - which will soon be eddy brake). I now see what a V-cam would do for you. Moving my Pon

minesskyline
minesskyline

Here's some updated pics

Deano 1
Deano 1

?

Posted Images

RICE RACING Community Regular

RICE RACING

Posted
Posted

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.

 

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RICE RACING Community Regular

RICE RACING

Posted
Posted

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.

mr_rbman Grand Master

mr_rbman

Posted
Posted
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 :(

sneakey pete Grand Master

sneakey pete

Posted
Posted

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.

 

Buraz Proficient

Buraz

Posted
Posted

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.

 

RICE RACING Community Regular

RICE RACING

Posted
Posted
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.

Buraz Proficient

Buraz

Posted
Posted
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.
iruvyouskyrine Grand Master

iruvyouskyrine

Posted
Posted
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.

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