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Search: Posts Made By: RMM
Showing results 1 to 25 of 37
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Forum: General Q & A
04-17-2006, 07:44 PM
Replies: 3
Views: 1,011
Posted By RMM

Re: Correct riser/manifold temp?

Really 90-100s? Wow even when was new know couldn't leave hand on riser for more than a few seconds.
Forum: General Q & A
04-17-2006, 01:56 PM
Replies: 3
Views: 1,011
Posted By RMM

Correct riser/manifold temp?

If I were to check the riser and/or manifold temp with a laser temp guage what would be the right temps?

1988 Merc 454/Bravo I RWC

Thanks
Forum: General Q & A
04-15-2006, 09:37 PM
Replies: 10
Views: 5,387
Posted By RMM

Re: 454 Overheating at higher rpm? Operating temp?

Engine is only 4 yrs old but RWC. Actually wasn't pumping any water before replaced impellor.
Forum: General Q & A
04-15-2006, 09:23 PM
Replies: 10
Views: 5,387
Posted By RMM

454 Overheating at higher rpm? Operating temp?

Have an 1988 Merc 454, Bravo I combo. Replaced the raw water impeller, but now seems to be slightly overheating at cruise. Gets up to 160-180 at 3200-3400 rpm. Didn't let get any hotter. Runs nice at...
Forum: General Q & A
05-23-2005, 04:13 PM
Replies: 7
Views: 1,881
Posted By RMM

Re: Slight vibration -Checking Bravo U-joint?

Good question. Think I'll put it on my buddy's lift and grease it above the water though!
Forum: General Q & A
05-23-2005, 03:24 PM
Replies: 7
Views: 1,881
Posted By RMM

Re: Slight vibration -Checking Bravo U-joint?

Thanks, which is the fitting on the transom that greases the gimble bearing? I think there is one on top, one on right side and one other?
Forum: General Q & A
05-23-2005, 02:46 PM
Replies: 7
Views: 1,881
Posted By RMM

Slight vibration -Checking Bravo U-joint?

On a Bravo I, is there any way to check the u joint /gimbal for water/condition while the boat is in the the water?

Also are there any other internal lube points beside at the drive shaft?
...
Forum: General Q & A
05-10-2005, 10:05 AM
Replies: 2
Views: 770
Posted By RMM

Changed circ pump - Scaling in water passages?

My circulating pump went and while installing the new one I noticed a decent amount of deposits/scaling in the the water passages (where I could reach my fingers into) and also what seemed like alot...
Forum: General Q & A
04-08-2005, 07:37 AM
Replies: 8
Views: 3,435
Posted By RMM

Re: Is the rear pin for Bravo trim cylinders lagrer than an Alpha?

No not been replaced. Found a parts breakdown and looks like they made a 3/8 and a 7/16 pin. Guess I need the 7/16.
Forum: General Q & A
04-07-2005, 09:32 AM
Replies: 8
Views: 3,435
Posted By RMM

Is the rear pin for Bravo trim cylinders lagrer than an Alpha?

When you pull up by hand on the drive there is about 1/2-1" of play because the pin is too small in diameter. This is the horizontal pin that connectds the two trim cylinders. What is happening is...
Forum: General Q & A
04-05-2005, 03:42 PM
Replies: 1
Views: 14,007
Posted By RMM

Replace speedometer tube on Bravo I?

Noticed the hose about 10" above the yellow fitting that goes into the drive is split. Looks like may have come loose and gotten smashed and crimped.

Can this hose be replaced without taking...
Forum: General Q & A
03-23-2005, 10:04 AM
Replies: 23
Views: 5,491
Posted By RMM

Re: 7.4 MPI overheating at WOT

Not sure how similar design is to a 1990 model, but I had a similar problem where only overheated at 3400+ rpm and it ended up being the springs were shot on the ball/rod/spring mechanism in the...
Forum: General Q & A
03-22-2005, 12:00 PM
Replies: 7
Views: 926
Posted By RMM

Re: Anyone have a carb cover for Merc 454?

Thanks guys, the one I'm looking for is probably 1.5' x 2' or so and angles down at the front, ridges on top. Looks like these. If so please email me at [email protected] ot leave me your email...
Forum: General Q & A
03-21-2005, 05:37 PM
Replies: 7
Views: 926
Posted By RMM

Anyone have a carb cover for Merc 454?

Looking for a used carb cover to buy for a 1990 Merc 454/Bravo, the larger plastic one that covers most of the intake manifold.

Thanks
Forum: General Q & A
07-11-2004, 07:05 AM
Replies: 2
Views: 741
Posted By RMM

Re: Can drive cause overheating?

Sorry was late when I posted and not thinking straight. Motor is a reman block installed two years ago Merc 7.4L Bravo I. About 200 hrs. Runs strong, only will run up to about 4200 with the aluminum...
Forum: General Q & A
07-10-2004, 10:08 PM
Replies: 2
Views: 741
Posted By RMM

Can drive cause overheating?

Well been trying to track down my overheating problem. Temp is fine till get above 3400rpm then hits 180degrees while under load. Checked everything, replaced thermostat, checked risers, flush entire...
Forum: General Q & A
07-09-2004, 12:54 PM
Replies: 6
Views: 818
Posted By RMM

Re: Which t-stat and temp of risers?

Going to get a infrared thermometer to measure the temp of the risers. Can anyone tell me what temp would be in the proper range? Assuming would be hotter than the water temp guage as is exhaust.
Forum: General Q & A
07-08-2004, 02:49 PM
Replies: 6
Views: 818
Posted By RMM

Re: Which t-stat and temp of risers?

Thanks guys, I did go ahead and flush all the lines. The impeller and circ pump seem to be fine, I pulled the lines and ran for a second to see how the flow was and looked good. May try pulling the...
Forum: General Q & A
07-08-2004, 10:23 AM
Replies: 6
Views: 818
Posted By RMM

Which t-stat and temp of risers?

Is the 140 deg the correct thermostat for a 1988 Merc 7.4L RWC? Had overheating prob above 3200rpm and pulled t-stat and ran cooler w/ none installed so think may have been part of my overheating...
Forum: General Q & A
07-07-2004, 02:24 PM
Replies: 6
Views: 735
Posted By RMM

Re: Propoer operting temp for Merc 7.4L/Bravo I?

How do I test the T stat?
Forum: General Q & A
07-06-2004, 09:22 AM
Replies: 6
Views: 735
Posted By RMM

Propoer operting temp for Merc 7.4L/Bravo I?

Question, what is the proper operating temp range for a RWC 1988 Merc 7.4L/Bravo I? Noticed yesterday that it was running up to around 190-200 deg at about 3400rpms. Don't rember it running this hot...
Forum: General Q & A
04-18-2004, 02:25 PM
Replies: 4
Views: 766
Posted By RMM

Water was in at least 4 cylinders. What is the...

Water was in at least 4 cylinders. What is the next logical test? How do you test risers, mainfolds, heads?
Forum: General Q & A
04-18-2004, 06:44 AM
Replies: 4
Views: 766
Posted By RMM

Update on engine need more advice

Well, here's the deal had posted a week ago that thought I put water pump on backwards and caused engine to overheat subsequently getting water into cylinders and crankcase. After two days of...
Forum: General Q & A
04-11-2004, 11:00 AM
Replies: 12
Views: 1,665
Posted By RMM

Thanks for all the input. He some further info....

Thanks for all the input. He some further info. Went down again yesterday and and was able to get it running. Ran for about 5 minutes and kept checking on the temp of the risers by hand. Port riser...
Showing results 1 to 25 of 37
 
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