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Search took 0.00 seconds. Search: Posts Made By: mmwjr
Forum: Engines 08-06-2020, 05:59 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Not surprised, glad you got it fixed.

Not surprised, glad you got it fixed.
Forum: Engines 04-24-2020, 01:33 AM
Replies: 55
Views: 8,447
Posted By mmwjr
From the TB V setup.

From the TB V setup.
Forum: Engines 04-24-2020, 01:33 AM
Replies: 55
Views: 8,447
Posted By mmwjr
Is it just the top of the engine that’s painted...

Is it just the top of the engine that’s painted red or the entire thing? I believe you engine was original with a TB V but it was replaced with TB IV because the PO got it cheap after the other one...
Forum: Engines 04-24-2020, 01:25 AM
Replies: 55
Views: 8,447
Posted By mmwjr
Thanks

Thanks
Forum: Engines 04-23-2020, 08:10 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Yes Don as I said there was 3 generations, the OP...

Yes Don as I said there was 3 generations, the OP has the oldest and yours is the newest. In between was a triangular shaped module mounted were the OPs is. None had a knock sensor. The TB V does...
Forum: Engines 04-23-2020, 04:48 PM
Replies: 55
Views: 8,447
Posted By mmwjr
They also installed the TB IV distributor to work...

They also installed the TB IV distributor to work with the module. The TB V distributor have its module mounted on the side next to the knock module. Lots of unknowns here. Since it’s new to you and...
Forum: Engines 04-23-2020, 11:15 AM
Replies: 55
Views: 8,447
Posted By mmwjr
Definitely TB IV, from what I recall there was 3...

Definitely TB IV, from what I recall there was 3 different generations of this system and this is the earlier design. I had a 1993 with TB IV and the module was a small triangle shape. This system...
Forum: Engines 03-17-2020, 11:29 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Understand, take care.

Understand, take care.
Forum: Engines 03-14-2020, 07:40 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Can you post pictures of the module and...

Can you post pictures of the module and distributor?
Forum: Engines 03-07-2020, 11:00 AM
Replies: 55
Views: 8,447
Posted By mmwjr
u Thought so, then yes it can limit rpm.

u

Thought so, then yes it can limit rpm.
Forum: Engines 03-06-2020, 11:12 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Being a 1996 it should be a Thunderbolt V (5) and...

Being a 1996 it should be a Thunderbolt V (5) and not a Thunderbolt IV (4) so it has a knock sensor that can go into safe mode and restrict rpms is it detects knocking.
Forum: Engines 03-06-2020, 08:31 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Not certain as you did not tell us the year of...

Not certain as you did not tell us the year of the engine or answer my question if it has the Thunderbolt V ignition system. If it does then yes it can rev limit in safe mode if detonation is...
Forum: Engines 02-29-2020, 05:31 PM
Replies: 55
Views: 8,447
Posted By mmwjr
The compression numbers sound good, did all the...

The compression numbers sound good, did all the plugs look about the same?

Contact Mercruiser with the drive serial number and they can tell you what gear ratio it is and be able to recommend a...
Forum: Engines 02-29-2020, 12:07 AM
Replies: 55
Views: 8,447
Posted By mmwjr
Very strange! The first number should be the...

Very strange! The first number should be the diameter but an Alpha cannot swing a prop that big without hitting the anticaviation plate
Forum: Engines 02-27-2020, 11:01 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Shrew might know what prop it came with from the...

Shrew might know what prop it came with from the factory. You can also try Quicksilvers prop calculator to see what it recommends.

Do you have the Thunderbolt V ignition system? If so see the...
Forum: Engines 02-27-2020, 01:10 AM
Replies: 55
Views: 8,447
Posted By mmwjr
In neutral any engine will rev easily. This tells...

In neutral any engine will rev easily. This tells you nothing since there is no load on the engine. As mentioned it’s time to work through the troubleshooting guide.

One note, have you removed...
Forum: Engines 02-26-2020, 03:54 PM
Replies: 55
Views: 8,447
Posted By mmwjr
Yes if a cylinder has low compression it will...

Yes if a cylinder has low compression it will always be bad. A leak down test can also be performed to determine if the issue is valve related and not rings.

This is why a sea trial and survey are...
Forum: Engines 02-26-2020, 11:29 AM
Replies: 55
Views: 8,447
Posted By mmwjr
Has the boat ever performed better since you...

Has the boat ever performed better since you owned it? I would perform a compression test to get the condition of the cylinders.
Forum: Engines 02-25-2020, 11:13 PM
Replies: 55
Views: 8,447
Posted By mmwjr
If the boat is kept in the water verify the...

If the boat is kept in the water verify the bottom is clean of marine growth.
Is the prop in good condition?
Are you sure all 8 cylinders are firing? And firing order is correct?

I would think...
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