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Search: Posts Made By: blue thunder
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Forum: General Q & A
01-23-2020, 09:51 AM
Replies: 71
Views: 6,200
Posted By blue thunder

Are you running the engines with only 2 bolts...

Are you running the engines with only 2 bolts holding the manifolds to the heads?

BT
Forum: General Q & A
05-06-2019, 11:42 AM
Replies: 4
Views: 441
Posted By blue thunder

Are you using the merc alignment tool? If so and...

Are you using the merc alignment tool? If so and if you have it as low as possible for it to still be aligned, you may want to put a shim plate under the mount base.
Forum: Wanted
04-23-2019, 07:56 PM
Forum: Wanted
04-23-2019, 01:39 PM
Replies: 4
Views: 232
Posted By blue thunder

I have 2 qjets that came off merc 502 mags, 1992...

I have 2 qjets that came off merc 502 mags, 1992 vintage iirc. They were working when taken off but probably would be good to go through them.

BT
Forum: General Q & A
03-27-2019, 08:11 AM
Replies: 7
Views: 289
Posted By blue thunder

Glad to help and I agree with your conclusion. ...

Glad to help and I agree with your conclusion.

BT
Forum: General Q & A
03-26-2019, 03:04 PM
Replies: 7
Views: 289
Posted By blue thunder

weight x moment arm (length of idler) = torque. ...

weight x moment arm (length of idler) = torque. You'll have to solve for weight. Whatever rpm you spin your engine to x 2 will be the max rpm of the bearing iirc. Good luck.
Forum: General Q & A
03-26-2019, 01:47 PM
Replies: 7
Views: 289
Posted By blue thunder

Then you can figure out how much load is on the...

Then you can figure out how much load is on the bearing and see what kind of room you have to work with at 14000rpm. Here is the bearing number.
SKF 6304 for the snout bearing

BT
Forum: General Q & A
03-26-2019, 12:56 PM
Replies: 7
Views: 289
Posted By blue thunder

You could always use a torque wrench to measure...

You could always use a torque wrench to measure how much additional torque will be on the idler arm at +30* preload. That will also allow you to see if it can actually be preloaded by 30* more...
Forum: General Q & A
03-12-2019, 07:05 AM
Replies: 38
Views: 2,387
Posted By blue thunder

I'd try a set of unmolested 32p bravo 1s. I'd...

I'd try a set of unmolested 32p bravo 1s. I'd avoid using a 5 blade prop on a bravo drive high hp single engine boat.
Forum: General Q & A
03-11-2019, 02:48 PM
Replies: 38
Views: 2,387
Posted By blue thunder

You probably need a higher pitched prop. If you...

You probably need a higher pitched prop. If you added 200hp and still have the same prop as b4 it would be like putting donut tires on a 1/4 mile drag car.
01-13-2019, 02:41 PM
Replies: 10
Views: 1,134
Posted By blue thunder

As long as the blower itself didn't seize you can...

As long as the blower itself didn't seize you can get home with no belt. It will spin letting air in. If blower is not able to spin though, no air intake.
Forum: General Q & A
01-13-2019, 02:28 PM
Replies: 11
Views: 1,056
Posted By blue thunder

I would ask the builder what ICL the cam was...

I would ask the builder what ICL the cam was installed at. Its possible he did not degree it and it is off causing too much EVC angle. I've seen cams being off as much as 6 degrees when being...
Forum: General Q & A
12-17-2018, 11:17 AM
Replies: 14
Views: 1,323
Posted By blue thunder

How does a leaking riser gasket create more...

How does a leaking riser gasket create more vacuum?
Forum: General Q & A
12-17-2018, 08:56 AM
Replies: 14
Views: 1,323
Posted By blue thunder

I believe the joint betw the riser and manifold...

I believe the joint betw the riser and manifold on your setup is dry so that gasket leaking shouldn't result in water reversion.
Forum: General Q & A
12-16-2018, 05:18 PM
Replies: 10
Views: 677
Posted By blue thunder

Is it a mercruiser setup?

Is it a mercruiser setup?
Forum: General Q & A
12-16-2018, 03:49 PM
Replies: 22
Views: 1,012
Posted By blue thunder

The good news is your temp problem is on the easy...

The good news is your temp problem is on the easy side to address. Too hot can be much more of a challenge. If you get the gauge working correctly and are still having low oil temps when sea temp...
Forum: General Q & A
12-15-2018, 04:49 PM
Replies: 14
Views: 1,323
Posted By blue thunder

Sounds like reversion. May not end up being a...

Sounds like reversion. May not end up being a problem if you used inconnel exhaust valves and try to keep the engine off idle as much as practical. Things other than water leaks that could cause...
Forum: General Q & A
12-15-2018, 04:43 PM
Replies: 22
Views: 1,012
Posted By blue thunder

It will eventually start causing milky looking...

It will eventually start causing milky looking engine oil/cream cheese breathers because the oil isn't getting hot enough to steam off the condensation. I had this problem at one time and ended up...
Forum: General Q & A
09-09-2018, 06:28 PM
Replies: 18
Views: 6,850
Posted By blue thunder

ngk vee power 9 heat range. 11.8-12 wot and 13.5...

ngk vee power 9 heat range. 11.8-12 wot and 13.5 idle af. Been doing it many yrs with 9.5:1 and 6lbs on 177s.
09-06-2018, 08:33 PM
Replies: 2
Views: 370
Posted By blue thunder

Detent wont have anything to do with not going...

Detent wont have anything to do with not going into reverse. Check shifter linkage first. Remove shift cable coming from helm at the shifter bracketand shift drive forward and reverse while engine...
09-06-2018, 08:22 PM
Replies: 19
Views: 1,458
Posted By blue thunder

Cool Not going to be ideal be any stretch although it...

Not going to be ideal be any stretch although it will work. Ive never found the rectangle port to be to lazy on a 454 anyway. Marine engines love free flow. That being said, I have 2 brass lined...
Forum: General Q & A
05-19-2018, 06:31 PM
Replies: 11
Views: 1,047
Posted By blue thunder

Sounds like it is getting lean or you have too...

Sounds like it is getting lean or you have too much timing. Always shows first in oil temp.
Forum: General Q & A
05-03-2017, 06:39 PM
Replies: 27
Views: 4,110
Posted By blue thunder

I continue to run the external rubber flappers...

I continue to run the external rubber flappers only and have zero issues with backwash. And I have taken big wakes on the transom while floating enjoying life. I don't believe they have any effect...
Forum: General Q & A
04-25-2017, 12:58 PM
Replies: 6
Views: 925
Posted By blue thunder

They are around 12" for a bravo setup. I made...

They are around 12" for a bravo setup. I made inserts for the tails that keeps the water out of the exhaust stream until the end of the tips. I'd call it dry.
Forum: General Q & A
04-22-2017, 07:01 PM
Replies: 6
Views: 925
Posted By blue thunder

I have 14 years on 2 sets, they are the best...

I have 14 years on 2 sets, they are the best header you can buy from my experience.

BT
Showing results 1 to 25 of 500
 


 
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