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10-14-2013, 09:06 PM #15000 RPM
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89 V-8 looper bogging just off idle
I have searched the threads and haven't found the exact issue I'm having. I've put 50-60 flawless hours on this engine (660 hrs now) and it's run like a champ up to 6700rpm's. This weekend after running 2-3 hours no problems I slowed for a no wake zone idling for 6-7 minutes. Getting close to the buoy I gave her a little gas and it bogged and stalled. It fired right back up idled fine then same deal, a little gas bog and stall, fired it back up idled fine stabbed the gas quick no hesitation at all. I did that several times (stab) with instant throttle response then took off and it ran 6500 back to the dock.
Most of the other posts are looking for the proper jetting after some work but these haven't been touched since Al built it...
Any pointers are really welcome and needed.William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-14-2013, 10:24 PM #2
Timer base/ sensor, including wiring at connectors to base. Run on the hose and move the timer base at idle. Wiggle the harness, also.
Last edited by z1rider; 10-14-2013 at 11:53 PM.
91 Seaswirl 178 spyder sport. Evinrude XP175. (59 MPH, so far, and so close).
85 Sleekcraft SST , 225 Johnson...(sold)
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10-15-2013, 09:08 PM #35000 RPM
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ttt bump
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 09:40 AM #45000 RPM
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z1rider - Thanks for the pointer. I haven't had the cowling off since that issue cropped up but I will this weekend.
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 10:55 AM #5
If that checks out ok and plugs look good might be a broken reed.
Steve
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10-16-2013, 11:00 AM #65000 RPM
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Thank you, that'll be check number two. Common since tells me that replacing the reeds every so often is a good idea. Unless there is something that keeps them from going through the engine it seems like that COULD be catastrophic. Am I wrong about that????
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 11:42 AM #7
That is why most replace the stock steel reeds with composite / carbon fibre etc. Chris Carlson I'm told work very well.
Steve
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10-16-2013, 11:57 AM #85000 RPM
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There should be a LIKE button. I've thought about switching them. What it really boils down to where changing things around on this engine comes, I'm scared to. change this you have to rejet, change that you have to rejet etc... As it sits it cranks great, turns a 29 SRX to 62-6300, pushes a 22' SST well into the 80's and has been extremely reliable so I'm just flat scared to change anything that might cause issues! I'd hate to change to another style reed and cause a lean condition or something.
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 12:05 PM #9
I would call Chris Carlson and ask,google Chris Carlson Reeds. I had a 3 litre v6 , so I cant comment on jetting for the V8, Monty Racing is another guy to talk to.Sounds like you have it running really well.
Steve
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10-16-2013, 01:18 PM #105000 RPM
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Ordered a set after a good conversation with Mr. Carlson, we'll see.
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 01:45 PM #11
If you ever get the chance, try a Mazco 28p re4 prop, it would be interesting to see how it compared to the srx. I tried a 27p srx on my ae-21 ran really well but needed more pitch. I bought a Mazco 28p re4 off a guy who had it on an OMC stoker , very similar hull.Again, sounds like you have yours running great.
Steve
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10-16-2013, 03:14 PM #12Scream And Fly VIP
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That is not a reed issue, if the reeds were bad it would not idle. The motor had boysens when it was built.What prop was on it? if it was the bravo1 it may need different exhaust holes. It may also be the trim angle you have it while idling. RE4 Is a good prop but does not work good on a 22 with a V8 unit works good on a bravo stern drive 22 or a 20 with a v6
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10-16-2013, 10:05 PM #135000 RPM
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We'll you bring up an interesting point about props, that's all that changed. I bought a 26 bravo1 that doesn't have any vent holes where I had been running a 24 bravo1 with dime sized vent holes. (If you need to know the actual hole size I can measure it when I get back to the house on Friday.) I like the way the way the 26 runs much better than the 24. It's not as good out of the hole but everything else from low midrange to top end is much better. The midrange acceleration will plant you in the seat and I picked up 6 mph on top, 79.8 mph and the prop isn't perfect. I haven't been able to get my hands on a Mazco 28 RE3 yet as suggested. I can't remember where the trim was. I do remember it bogging while trying to ease it up on the trailer and it was trimmed up to the top of the primary portion of the trim unit. I did run it earlier that day trimmed up really high getting over a sandbar in the river and it didn't act up. I guess being trimmed that high might have relieved the exhaust easier if that's where you are headed with the prop holes. Thanks again for your help!!!!
Last edited by williamj; 10-16-2013 at 10:13 PM.
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-16-2013, 10:26 PM #145000 RPM
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The 29 SRX does not impress me at all. The best I could ever get it to run was 82/83 after setting the trim tabs to neutral. The previous owner had them way down. The tips were over 1/4" below the bottom of the boat. If a 26 bravo1 will run 80 I believe the proper 3 blade speed prop should run maybe 86/87???
William J.
22 SST Stoker
300 E'rude V8
Ported and plugged
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10-17-2013, 11:02 AM #15Scream And Fly VIP
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No vent holes will act just like you mentioned on a Bravo1 prop