Exhaust brake

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Peter & Sandra James Oka 374
Member
Posts: 413
While i've been fitting the auto trans to the Oka I came across a sticker from the mob that fitted the exhaust brake to the 374.
It was stuck to the actuator on the exhaust butterfly.
"Exhaust Brake Specialists Aust. " 1800 632 611 no other details.
A google search gives no company with that specific name so I guess if more info is required you can ring the number.

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Oka 374 LT Van

February 16, 2012 at 8:22 AM Flag Quote & Reply

James & Usha (THEByleDuct)
Administrator
Posts: 161
The phone number relates to a Forty-Second Helav Pty Ltd trading as E B S Engineering. Address is
Fy 23 193 Hartley St, Portsmith, QLD 4870, Australia

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OKA #072

February 16, 2012 at 10:53 AM Flag Quote & Reply

Rod Lyons
Member
Posts: 12
Peter & Sandra James Oka 374 at February 16, 2012 at 8:22 AM
While i've been fitting the auto trans to the Oka I came across a sticker from the mob that fitted the exhaust brake to the 374.
It was stuck to the actuator on the exhaust butterfly.
"Exhaust Brake Specialists Aust. " 1800 632 611 no other details.
A google search gives no company with that specific name so I guess if more info is required you can ring the number.

G,day Peter, are you fitting it to the OKA or just want info?
Cheer Rod Lyons
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February 21, 2012 at 6:10 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 413
Its already fitted, was there when we bought 374 but has never worked, was marked as U/S by the RAAF when in service and never repaired. As Oka know nothing about it and reckon they never fitted it I'm presuming that the RAAF had it fitted.
Then I keep hearing rumours about Perkins Phasers bending valves when running exhaust brakes due to weak valve springs and the back pressure keeping the valves open so I'm reluctant to use it in case of engine damage.
I've actually got it all operational (it is operated by compressed air and had a blockage in the valve) but as I said am wary of using it.
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Oka 374 LT Van

February 22, 2012 at 5:55 AM Flag Quote & Reply

Rod Lyons
Member
Posts: 12
Peter & Sandra James Oka 374 at February 22, 2012 at 5:55 AM
Its already fitted, was there when we bought 374 but has never worked, was marked as U/S by the RAAF when in service and never repaired. As Oka know nothing about it and reckon they never fitted it I'm presuming that the RAAF had it fitted.
Then I keep hearing rumours about Perkins Phasers bending valves when running exhaust brakes due to weak valve springs and the back pressure keeping the valves open so I'm reluctant to use it in case of engine damage.
I've actually got it all operational (it is operated by compressed air and had a blockage in the valve) but as I said am wary of using it.
G,day Peter, if you are fitting an auto it wont work that well anyway! most autos will unlock the torque convertor will unlock when the go pedal is at zero.
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February 22, 2012 at 12:45 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 413
The auto has the smarts and I can lock the torque converter in any gear right down till it stalls if one forgets to disengage it.
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Oka 374 LT Van

February 22, 2012 at 1:06 PM Flag Quote & Reply

Rod Lyons
Member
Posts: 12
Peter & Sandra James Oka 374 at February 22, 2012 at 1:06 PM
The auto has the smarts and I can lock the torque converter in any gear right down till it stalls if one forgets to disengage it.
What tranny did you get?
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February 22, 2012 at 2:21 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 413
It is a 4L80E with a Compushift controlling it. The Compushift has also been modded from standard to allow the torque converter to be manually locked with an additional switch to either manually or automatically lock it.
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Oka 374 LT Van

February 23, 2012 at 11:08 AM