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Search: Posts Made By: Smitty275
Showing results 1 to 25 of 333
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02-28-2024, 07:57 PM
Replies: 7
Views: 490
Posted By Smitty275

Closed cooling has to have a circulation pump....

Closed cooling has to have a circulation pump. Same set up as a car only its water to water. Being freshwater cooled and how stable it would be was kind of what I was wondering about. I was thinking,...
02-24-2024, 09:22 AM
Replies: 7
Views: 490
Posted By Smitty275

Engine water pump, needed or not.

For decades there was always a regular water circulation pump mounted on V8s for inboard and I/O applications. Then Mercruiser did some without the circulation pump, only the raw water pump. Which...
Forum: General Q & A
02-05-2024, 10:57 AM
Replies: 28
Views: 1,740
Posted By Smitty275

Have you tried retarding or advancing you total...

Have you tried retarding or advancing you total ignition timing? The new cam and compression will very possibly need different fuel curve.
Forum: General Q & A
02-05-2024, 10:49 AM
Replies: 2
Views: 368
Posted By Smitty275

In otherwords it was installed straight up. No...

In otherwords it was installed straight up. No advance or retard.
12-09-2023, 02:35 PM
Replies: 32
Views: 2,637
Posted By Smitty275

The hard anodizing from Diamond is awesome. Any...

The hard anodizing from Diamond is awesome. Any other coating jobs send to Swain Tech because I've never seen it come off. They're also very easy to deal with and have quick turnaround.
Forum: General Q & A
11-10-2023, 07:09 AM
Replies: 4
Views: 468
Posted By Smitty275

In your situation Permatex HI Heat Copper or Red...

In your situation Permatex HI Heat Copper or Red is the solution. It'll also stop the head from getting worse. Smear it on one side and put the manifold in place. The do the other side. I haven't...
10-15-2023, 09:56 AM
Replies: 5
Views: 956
Posted By Smitty275

I'd say it depends a lot on weight of the boat...

I'd say it depends a lot on weight of the boat and how it's used. If it's heavy, yet capable of pulling a large pitch& diameter prop it's probably not gonna handle 600hp. Same for offshore where it...
Forum: General Q & A
10-15-2023, 09:46 AM
Replies: 4
Views: 507
Posted By Smitty275

One of those numbers has to be a typo. "If"...

One of those numbers has to be a typo. "If" correct the prop is about 32% more efficient than is possible.
Forum: Prop Talk
10-06-2023, 07:30 PM
Replies: 3
Views: 472
Posted By Smitty275

Gotta admit, the Sport 220 is kind of a potato...

Gotta admit, the Sport 220 is kind of a potato chip compared to most of that length. According to a guy who work for Baja back then they were only 3000lbs. Plus they got a very shallow V with only a...
Forum: Prop Talk
10-06-2023, 06:04 PM
Replies: 3
Views: 472
Posted By Smitty275

Mirage Plus question

I normally run a 26" Bravo prop, 4500/67.5mph on a Baja 220 Sport w330hp 454. Got to try a 27" Mirage Plus. While it was 2mph faster, it wouldn't come out of the hole for crap. Fully trimmed down I...
Forum: General Q & A
10-06-2023, 03:50 PM
Replies: 16
Views: 849
Posted By Smitty275

Thanks for the update.

Thanks for the update.
09-30-2023, 09:41 PM
Replies: 120
Views: 33,793
Posted By Smitty275

Where they're cast at isn't the issue. It's where...

Where they're cast at isn't the issue. It's where they're machined and assembled at that counts. The Chinese don't care about how well or long it lasts. When the castings are done by AFR, FloTek,...
Forum: General Q & A
09-30-2023, 09:14 PM
Replies: 5
Views: 427
Posted By Smitty275

Is it a safe bet you dynoed with long automotive...

Is it a safe bet you dynoed with long automotive headers and then put your marine exhaust on in the boat?
As for a rule of thumb for jet size vs A/F ratio not really. I'd suspect going back to your...
09-10-2023, 10:02 AM
Replies: 14
Views: 1,285
Posted By Smitty275

Your concern for the swivel pin is genuine. Can...

Your concern for the swivel pin is genuine. Can make for an ill handling boat. Could be a loose bolt, bad bushings, or worn gimble ring due to the clamp bolt being loose. If it's that sloppy the...
Forum: General Q & A
08-08-2023, 10:17 AM
Replies: 2
Views: 416
Posted By Smitty275

If you have the typical T style water cocks in...

If you have the typical T style water cocks in block and manifolds check them very closely. I have a heck of a time getting a couple of mine to seal. I've actually had to cut seats and skin the knobs...
Forum: Prop Talk
08-06-2023, 11:39 AM
Replies: 20
Views: 2,203
Posted By Smitty275

Since your running an off brand prop it's really...

Since your running an off brand prop it's really hard to make comparisons. All props are different in how they perform. So a three blade this won't be anything like a three blade that. Most with...
Forum: Prop Talk
08-06-2023, 10:51 AM
Replies: 20
Views: 2,203
Posted By Smitty275

Since your running an off brand prop it's really...

Since your running an off brand prop it's really hard to make comparisons. All props are different in how they perform. So a three blade this won't be anything like a three blade that. Most with...
Forum: General Q & A
07-30-2023, 09:40 PM
Replies: 50
Views: 4,151
Posted By Smitty275

Good question. Maybe figure out what was making...

Good question. Maybe figure out what was making the epoxy soft.
Forum: General Q & A
07-30-2023, 08:56 AM
Replies: 240
Views: 89,915
Posted By Smitty275

Floteks oval port flows considerably more than...

Floteks oval port flows considerably more than the others. Never compared the rectangular ports. I've not heard of any complaints on Floteks either. Forget intake volume. CC doesn't matter as much as...
Forum: General Q & A
07-30-2023, 08:49 AM
Replies: 50
Views: 4,151
Posted By Smitty275

I'd say the epoxy is all that there. No welding...

I'd say the epoxy is all that there. No welding is evident. Yes you can drill the side holes open. Possibly just use a 1/16" lunch and knock the epoxied out. Or whatever size punch matches the holes....
Forum: General Q & A
07-29-2023, 09:17 AM
Replies: 50
Views: 4,151
Posted By Smitty275

How they're put on is all dependent on who did...

How they're put on is all dependent on who did it. If they're welded you should be able to see signs of the welding where the two meet. Must have been a really cheap epoxy if it's falling apart. So...
Forum: General Q & A
07-29-2023, 09:13 AM
Replies: 18
Views: 1,911
Posted By Smitty275

You need to throw automotive engine building...

You need to throw automotive engine building knowledge out the window when building a marine engine. Your never going to turn the high RPM they turn. Yet your going to be above their cruise RPM all...
Forum: General Q & A
07-27-2023, 08:07 PM
Replies: 16
Views: 2,023
Posted By Smitty275

Why not take the distributor, coil, and module...

Why not take the distributor, coil, and module off the 454 and drop in the 502 with a good single plane and a 950/1000cfm annular Holley?
Did Merc use an iron gear on their roller cams? If so all is...
Forum: General Q & A
07-27-2023, 06:20 PM
Replies: 8
Views: 501
Posted By Smitty275

Where?

Where?
Forum: General Q & A
07-21-2023, 04:17 PM
Replies: 14
Views: 3,764
Posted By Smitty275

Aeromotive pumps are still tops in my book. I've...

Aeromotive pumps are still tops in my book. I've got the new that's 20+yrs old and still works great. I've install a lot of them that are just as old and I've never heard of one failing
Showing results 1 to 25 of 333
 


 
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