The Murphy Builders Site

Hi Ken
I've emailed you direct I think...let me know if it doesn't arrive - Nig

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of Ken
Sent: 11 March 2006 16:33
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Subaru EGT


Sorry for being a bit off topic but for anyone with an automotive
conversion, do you recall the highest EGT you saw during initial testing
without a propellor?

This Soob ej22 will exceed 800C (1470F) at 4000+ rpm with oem EFI. I
don't really know if that is normal but 4 or 5" of brightly glowing
exhaust header sure makes one wonder?? The sensors are 4 or 5" from the
cylinder head and these are siamesed ports so that each port is fed by 2
cylinders. I would expect even higher numbers with a prop installed but
I have no experience with EGT's.

Mike has a post indicating 1450F on his V8 which I think is without a
prop?? I've found a number of postings that indicate guys are seeing
1200 to 1350 in cruise and at full power on EA81's. Only one as high as
1450 and again that was while cruising. I know none are going to be
accurate but??

thanks for any comments
Ken




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Ken,
Check the ignition timing. Retarded timing can cause high exhaust
temperature
---
Roger Cole
Elite 709E.
On Mar 11, 2006, at 10:33 AM, Ken wrote:

Sorry for being a bit off topic but for anyone with an automotive
conversion, do you recall the highest EGT you saw during initial
testing
without a propellor?

This Soob ej22 will exceed 800C (1470F) at 4000+ rpm with oem EFI. I
don't really know if that is normal but 4 or 5" of brightly glowing
exhaust header sure makes one wonder?? The sensors are 4 or 5" from
the
cylinder head and these are siamesed ports so that each port is fed by
2
cylinders. I would expect even higher numbers with a prop installed but
I have no experience with EGT's.

Mike has a post indicating 1450F on his V8 which I think is without a
prop?? I've found a number of postings that indicate guys are seeing
1200 to 1350 in cruise and at full power on EA81's. Only one as high as
1450 and again that was while cruising. I know none are going to be
accurate but??

thanks for any comments
Ken




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Thanks Roger and everyone
I have indeed checked ignition and valve timing with piston TDC. I
wasn't ready for such high temps but based on what I've heard so far it
I'm feeling better about dragging it to the airport and trying it with a
load. ;)
Ken

Roger Cole wrote:

Ken,
Check the ignition timing. Retarded timing can cause high exhaust
temperature
---
Roger Cole
Elite 709E.
On Mar 11, 2006, at 10:33 AM, Ken wrote:

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