New Steyr SE engine

Monoblock certainly is special. Elminates head gasket..

They still have two stage injectors so will run without EFI management.
 
Yes Tier III,

Prototype V12 version was offered to US special forces two years ago, rejected during trials in favor of Titan.

I have installed two 246's in separate vessels. Seven years on both operating fine. Laptop diagnostic software comes free and is very user frendly. Mermaid did a great job supporting the engine.

Older engines suffered injector problems hosing pistons. Injector supplier changed, at one time injectors were 1K each, come down a lot now £450 each. Dual station set up costs zillions!

All 246's in RNLI service were subject to campaign and eventually changed out for 256 vesion. Still troublesome

256 engines in MOD rigid raiders have hard life, and they regularly suffer piston pick up. Biggest problem is that engines prove almost impossible to repair. MOD insisted on extended dyno test of repaired engines which they generally failed, big arguements as to who picked up the tab. Accepted practice is that Mitchell Diesels now supply new long engines to support failures at 13K a pop! Little Yanmar 4 HLA's did a far better job.

Engines drove Cyril Snare of Mermaid Engines (original distributor) to dispair and the prospect of destroying his pension pot, led him to dump the franchise.

Serious contender for MOD re-power of FV 101 light tank. However engine could not pass MOD endurance testing despite being given three attempts.

Company run by bunch of dedicated and clever engineers. The fixed head design is solution looking for a problem, head gasket failures very rare occurence so why bother. Many older techs in UK have long memories going back to the Leyland 500 fixed head wonder, ended up running out of feet to shoot off.

Install them carefully and load them light, no more than 80%, and they are an OK little motor. If you have a problem, not many Steyr signs around our coast.

Nice little boutique chain saw motor when some other poor sod is picking up the tab ........
 
As always a very interesting insight from Latestarter.

I always really fancied the look of the engineering of the Steyrs and had them shortlisted in my mind for the day the inevitable re-power came due for my little old tub.

However due to much being written about the complexity and relatively short life of these 'buzz saw' engines I have completely turned my back on my aspiration to 'go diesel' and have instead plumped for a different, simpler, hopefully more reliable [and repairable] 454 cu inches of MAG Mpi = KISS
 
I know about the history. Think cobra also used it.

I was just wondering about the improvements done on the new series SE.
I can se changes in the design and rated speed but are there anything else?
4valves, removed the belt drive? All new engines in this class seems to be non reparable,but on this overhaul of the valves must be a challenge!

Think they have been trying CR aswell.
 
ulyden said:
I know about the history. Think cobra also used it.

I was just wondering about the improvements done on the new series SE.
I can se changes in the design and rated speed but are there anything else?
4valves, removed the belt drive? All new engines in this class seems to be non reparable,but on this overhaul of the valves must be a challenge!

Think they have been trying CR aswell.
Click to expand...

Yep you are correct OMC used the engine years ago on the Cobra outdrive which I believe was sold to Volvo.

Took another look at the brochure, dual mass flywheel on a marine engine?? Begs the question regarding torsional issues and revised rated speeds.

On older engines piston design was out of the stone age and small production volume prevented them from attacting more modern designs from suppliers. Volvo were very grumpy a while back, having developed a new piston design with KS found it being hawked around the industry. SE looks like it now has modern gallery cooled, ceramic coated piston to address old issues.

I note NO four jug version of SE, expect four unit injector motor cannot be price competitive in the power node.

A company that deserves to do well, honest john spec sheets written by engineers not marketing hypers. Never saw any of the 6.4 liter V12 marine engines, over 550 Hp in a neat compact package weighing around 650 kg would be a wow. However they they were never able to bring the product to market without a big military order.

I agree that all of the new generation marine chain saw motors are throw away engines, however the Steyr was sold as a repairable engine and proved not to be. Never a squeak of valve issues despite complexity.
 
I have two Steyr Motors in this race boat (295hp each & 74.52mph), and the two old Steyr race boat engines (250hp) that went Round Britain in 2008 and two Cowes-Torquay-Cowes and many other races are now in my pleasure boat. So I like them.
 
Shortcomings accepted; I am with 2 XS IF on this. I had faith in this engine back 20 years ago; they made a great addition to my Levi designed Triana Tropica 25.
Perhaps we may hear from subsequent "Sonny" owners regarding their more recent status.
I would most certainly go with them again, especially compared with some recent re-engined T 25's with overweight and oversize installations.
 
Provided that you prop with care engine works OK.

The two vessels I installed Steyrs in eight years ago are still working well. However the Fairey Swordsman which was repowered with a pair subsequently failed two engines and did not get off start line at RB2008.

Nice little low volume boutique motor for those who need it and are prepared to install with care.
 
Latestarter1 said:
Provided that you prop with care engine works OK.

The two vessels I installed Steyrs in eight years ago are still working well. However the Fairey Swordsman which was repowered with a pair subsequently failed two engines and did not get off start line at RB2008.

Nice little low volume boutique motor for those who need it and are prepared to install with care.
Click to expand...

I take it you mean by "are prepared to install with care" you mean "are to install it correctly"
I have seen many engines not installed correctly and many break because of this. The install is so important but often very little care goes in to the most important part, as I am sure you know as the ones you installed eight years ago are still working well.

I don't what happened to the Fairey Swordsman, I know he was at Newcastle because I gave him some oil for his engines and he is on the RB08 video, but I do see max time for him on the first leg to Plymouth.


The now old model Steyr MO306's install
 
2_XS_IF said:
I don't what happened to the Fairey Swordsman, I know he was at Newcastle because I gave him some oil for his engines and he is on the RB08 video, but I do see max time for him on the first leg to Plymouth.
Click to expand...

he was one of the few that made it all the way round as we were in classic class aswell and went all the way round, thanks to a pair of cummins qsb's
 
aquapower said:
he was one of the few that made it all the way round as we were in classic class aswell and went all the way round, thanks to a pair of cummins qsb's
Click to expand...

This one ??

DSC_0098.jpg


or this classic battle ??

DSC_0084.jpg


One of the slower ones ...

DSC_0101.jpg
 
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