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Search: Posts Made By: jmherbert
Showing results 1 to 25 of 302
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Forum: Prop Talk
08-11-2009, 10:59 PM
Replies: 5
Views: 1,079
Posted By jmherbert

Tried the 17P Vensura, not a whole lot different...

Tried the 17P Vensura, not a whole lot different than the 17P Mirage. Planing out actually felt like it took a bit longer/faster to plane, but it seemed it would hold plane at lower speeds. ...
Forum: Prop Talk
08-10-2009, 08:07 PM
Replies: 5
Views: 1,079
Posted By jmherbert

An update, ran the 17P Mirage (Quicksilver) and...

An update, ran the 17P Mirage (Quicksilver) and got 48mph GPS @ 4800RPM.

Best top speed with the prop a little more than a tad out of the water.
Forum: Prop Talk
08-10-2009, 09:13 AM
Replies: 5
Views: 1,079
Posted By jmherbert

Which Prop for heavy 24'?

I am in the never ending search for the right prop for a very heavy 24' Four Winns Liberator, with the 383 Mag MPI in it. (alpha, ick!)

I have tested a 4 blade Vensura (19P) and are getting about...
Forum: General Q & A
08-09-2009, 11:21 PM
Replies: 1
Views: 9,567
Posted By jmherbert

Do not use auto parts in a boat! (especially fuel...

Do not use auto parts in a boat! (especially fuel pumps!)

Unless you want to see your boat go up flames.
Forum: General Q & A
08-07-2009, 04:31 PM
Replies: 7
Views: 1,037
Posted By jmherbert

I will have to look. I am assuming by the...

I will have to look. I am assuming by the throttle body?

It held 43 Psi, so it doesn't look to be a fuel delivery issue.

Tried a different prop (next size up) and it still acted like a rev...
Forum: General Q & A
08-07-2009, 08:50 AM
Replies: 7
Views: 1,037
Posted By jmherbert

What should the pressure be? Thanks, ...

What should the pressure be?

Thanks,

Signed, missing my carburetors...
Forum: General Q & A
08-06-2009, 11:06 PM
Replies: 7
Views: 1,037
Posted By jmherbert

Merc 383 MPI won't spin past 4100rpm in gear

I have a 2yr old Merc 383 MPI reman, and ever since day 1 (well, at least day 1 after break-in) the motor will not spin past 4000-4100 RPM in gear. It sounds as if the rev limiter is kicking in.
...
Forum: General Q & A
08-12-2008, 07:32 AM
Replies: 34
Views: 5,815
Posted By jmherbert

74/87 sounds like a big gap to me. I would try...

74/87 sounds like a big gap to me. I would try to keep the primary/secondary size gap around 6-10 jet sizes. The reason primaries have smaller jets than secondaries is most carbs don't have power...
Forum: General Q & A
07-29-2008, 01:03 PM
Replies: 0
Views: 2,740
Posted By jmherbert

Question Merc 383 - 4 Winns 24' Liberator Prop Question

Hey all,

Its been awhile since I posted, too busy boating or working.

I have a 24' Four Winns Liberator (overweight deep-V). The original motor (350 mag) would spin a 17 pitch quicksilver...
Forum: General Q & A
08-21-2007, 11:03 AM
Replies: 5
Views: 2,166
Posted By jmherbert

One thing to watch is the bravo coupler may...

One thing to watch is the bravo coupler may interfere with the water inlet hose coming off the drive. It did on mine (Merc 383 to Alpha gen 1)

I needed to add a thru- transom pickup and...
Forum: General Q & A
08-19-2007, 09:53 AM
Replies: 28
Views: 19,106
Posted By jmherbert

I'd take that bet, all you have to do is crank...

I'd take that bet, all you have to do is crank your idle speed adjustment up until your spinning those RPM's, then look down the carb throat and see if any fuel is coming out the boosters. If not,...
Forum: General Q & A
08-18-2007, 11:46 AM
Replies: 28
Views: 19,106
Posted By jmherbert

Thats OK for rollers but not for flat tappet, not...

Thats OK for rollers but not for flat tappet, not per cam manufacturers!

http://www.cranecams.com/pdf/548e.pdf

I'd bet 99% of engines in neutral @ 2500-3000 RPM are still in the idle circuit....
Forum: General Q & A
08-11-2007, 01:55 AM
Replies: 8
Views: 2,069
Posted By jmherbert

I've used both BG and Holley, and I would give...

I've used both BG and Holley, and I would give the nod to the BG (demons) They are basically the same carb, but the Barry Grants take the same idea and refine it. Machined metering blocks, better...
Forum: General Q & A
08-01-2007, 08:57 PM
Replies: 5
Views: 838
Posted By jmherbert

I got a Stefs pan, I think it is 8qt. It has the...

I got a Stefs pan, I think it is 8qt. It has the baffle, and about 1 hr of use :mad: on it.

The pump and pickup also have about 1 hr use on it

If interested, email [email protected]
Forum: General Q & A
07-30-2007, 02:42 PM
Replies: 16
Views: 11,632
Posted By jmherbert

I replied to your email last week, but it must of...

I replied to your email last week, but it must of not gotten through. I have the V8-24 module. I do not have a good distributor though. (I have one, but the pickup is bad, and the shaft bushing is...
Forum: General Q & A
07-26-2007, 06:38 PM
Replies: 7
Views: 1,574
Posted By jmherbert

I would get the 3M marine sealer/adhesive for...

I would get the 3M marine sealer/adhesive for below the waterline if it were me.
Forum: General Q & A
07-20-2007, 03:39 PM
Replies: 16
Views: 11,632
Posted By jmherbert

When I get home, I will look at it to be sure,...

When I get home, I will look at it to be sure, but I'm pretty sure it says "V6-24" on it.

I am flying today, but should have the info by Saturday or Sunday.
Forum: General Q & A
07-20-2007, 02:50 PM
Replies: 16
Views: 11,632
Posted By jmherbert

I've got one. Its a 1987 350 Mag. Email me...

I've got one. Its a 1987 350 Mag.

Email me @ [email protected] if interested.
Forum: General Q & A
07-18-2007, 10:15 PM
Replies: 25
Views: 9,294
Posted By jmherbert

4-5 minutes is more than plenty if the engine is...

4-5 minutes is more than plenty if the engine is warm. 30 seconds to a minute should suffice.

I am not familiar to your spreadbore holley, but I think that your primaries are plenty rich, but...
Forum: General Q & A
07-17-2007, 10:22 PM
Replies: 25
Views: 9,294
Posted By jmherbert

Too much fuel is way better than burning holes in...

Too much fuel is way better than burning holes in pistons. Go big and work your way back. If you have 69's:D start with those. 67's will likely be big enough, if it ran decent on 61's I'd guess...
Forum: General Q & A
07-16-2007, 03:54 PM
Replies: 2
Views: 1,037
Posted By jmherbert

Thanks!

Thanks!
Forum: General Q & A
07-15-2007, 10:38 PM
Replies: 2
Views: 1,037
Posted By jmherbert

ECM 555 Question

Does anyone know if you can check error codes on the ECM 555 using the LED & jumper check, as in the older MEFI's?

Thanks
Forum: General Q & A
07-15-2007, 10:25 PM
Replies: 2
Views: 828
Posted By jmherbert

Got mine from Bam marine. mercruiserparts.com

Got mine from Bam marine. mercruiserparts.com
Forum: General Q & A
07-10-2007, 01:27 PM
Replies: 12
Views: 1,233
Posted By jmherbert

The blades in a merc pump are straight up and...

The blades in a merc pump are straight up and down.

I know because the impeller fell off one of mine and led to blown headgaskets.
Forum: General Q & A
07-10-2007, 08:16 AM
Replies: 4
Views: 778
Posted By jmherbert

Here's what I did. 1. Drain old oil out. ...

Here's what I did.

1. Drain old oil out.
2. Fill crankcase with diesel as full as possible.
3. Pull distributor, circulate oil with priming rod for a minute or so.
4. Drain diesel.
5. Repeat...
Showing results 1 to 25 of 302
 
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