Offshoreonly.com - Search Results
Offshoreonly.com

Go Back  Offshoreonly.com > Search Forums
Reload this Page >

Search Results

Register
FAQ
Calendar
Today's Posts
Search
Vendor Directory
Notices
 
Page 1 of 2
1
2
Search: Posts Made By: OGHallett
Showing results 1 to 25 of 34
Search took 0.01 seconds.
Forum: Restorations & Upgrades
04-06-2026, 10:32 AM
Replies: 19
Views: 3,105
Posted By OGHallett

I picked up the exhaust weldments about two weeks...

I picked up the exhaust weldments about two weeks ago and we have nearly finished the engine installation. I re-routed all the fuel lines, installed the sensors on the motor, installed the raw water...
Forum: Restorations & Upgrades
03-17-2026, 01:01 PM
Replies: 19
Views: 3,105
Posted By OGHallett

Thanks for the suggestion! The exhaust tip...

Thanks for the suggestion! The exhaust tip location is ~4.5" below the oval exhaust port in the transom assembly, and ~2.7" below the idle bypass ports in the transom assembly (both of these are...
Forum: Restorations & Upgrades
03-16-2026, 10:49 AM
Replies: 19
Views: 3,105
Posted By OGHallett

It's been a while waiting on the machined exhaust...

It's been a while waiting on the machined exhaust components, but they are finally completed. Welding should happen early next week, and I'm hoping to have the exhaust installed in the next 3 weeks....
Forum: Restorations & Upgrades
01-24-2026, 06:37 PM
Replies: 19
Views: 3,105
Posted By OGHallett

found a set of Stainless Marine risers for $600...

found a set of Stainless Marine risers for $600 that are in great shape (usually around $1600 new). I used a consumer grade 3D scanner to scan the left side riser, manifold, engine, and transom...
Forum: Restorations & Upgrades
01-08-2026, 02:02 PM
Replies: 19
Views: 3,105
Posted By OGHallett

Tartilla Yes! Its a 427cid SBC. Here are the...

Tartilla

Yes! Its a 427cid SBC. Here are the major parts:

Dart SHP block, 1-piece rear main seal
Smeding 4340 Forged Steel Crankshaft, Internal Balance, 4.000" Stroke
Smeding 4340 Forged...
Forum: Restorations & Upgrades
01-01-2026, 07:24 PM
Replies: 19
Views: 3,105
Posted By OGHallett

Over the last few weeks, I installed the Bravo HP...

Over the last few weeks, I installed the Bravo HP transom assembly, fabricated new engine mounts, drilled the six engine mount holes through the stringers and bonded in Garolite sleeves to ensure no...
Forum: Restorations & Upgrades
11-19-2025, 02:48 PM
Replies: 19
Views: 3,105
Posted By OGHallett

I drove over to Smeding Performance this morning...

I drove over to Smeding Performance this morning to watch the engine be tuned on the dyno. They started with four pulls at 30deg advance, then three pulls at 32deg, then two pulls at 34deg. 34deg...
Forum: Restorations & Upgrades
11-18-2025, 08:37 PM
Replies: 19
Views: 3,105
Posted By OGHallett

Updates... Does anyone in the central valley...

Updates...

Does anyone in the central valley or bay area have the bravo transom drill jig (Mercury P/N 91-43693A2) that I could rent from you?
...
Forum: Restorations & Upgrades
11-12-2025, 01:21 PM
Replies: 19
Views: 3,105
Posted By OGHallett

After talking though the options, we decided to...

After talking though the options, we decided to have them replace the transom, stringers, and bulkheads with 26lb Coosa and the floor with marine grade plywood with a veil on both sides to seal it...
Forum: Restorations & Upgrades
10-31-2025, 08:13 AM
Replies: 19
Views: 3,105
Posted By OGHallett

I found a shop that is doing the work for a...

I found a shop that is doing the work for a substantially lower price. They have discovered that, although not all of the stringers/bulkheads/decking are rotten, they are all 100% water logged. At...
Forum: Restorations & Upgrades
10-20-2025, 11:06 AM
Replies: 19
Views: 3,105
Posted By OGHallett

Thanks guys. Yeah, although the project is...

Thanks guys. Yeah, although the project is turning into something much bigger than I intended, I am still enjoying the whole process. It will be worth it when the whole boat is ready for the next 45...
Forum: Restorations & Upgrades
10-18-2025, 11:39 AM
Replies: 19
Views: 3,105
Posted By OGHallett

I started disassembling the boat over the last...

I started disassembling the boat over the last two weeks (interior, pulled the stern drive, pulled the engine, and removed the transom assembly). I found that at least the right stringer and a...
Forum: Restorations & Upgrades
10-18-2025, 11:36 AM
Replies: 19
Views: 3,105
Posted By OGHallett

1979 Hallett Mini Day Cruiser Restoration

I am in the process of restoring my fathers 1979 Hallett that he picked up new from the factory in SoCal. 'Old Yeller' has been an integral part of our family summers. My extended family (15-20 of...
Forum: General Q & A
10-09-2025, 10:25 AM
Replies: 3
Views: 385
Posted By OGHallett

It is a 1979 Hallett Mini Day Cruiser. I've not...

It is a 1979 Hallett Mini Day Cruiser. I've not had much luck finding photos or instructions online.
Forum: General Q & A
10-08-2025, 06:29 PM
Replies: 3
Views: 385
Posted By OGHallett

Steering cylinder removal

Does anyone know how to remove this steering cylinder from the Alpha 1 transom plate? I started wrenching on it but I'm not confident I am doing it correctly.
...
Forum: Restorations & Upgrades
10-07-2025, 02:27 PM
Replies: 3
Views: 1,011
Posted By OGHallett

I have pulled the engine and am working towards...

I have pulled the engine and am working towards removing the Alpha transom assembly. I am a bit stuck though. Can anyone tell me how to remove the steering cylinder?
...
Forum: Restorations & Upgrades
10-01-2025, 10:05 AM
Replies: 3
Views: 1,011
Posted By OGHallett

Thanks SB. I started calling around to see what...

Thanks SB. I started calling around to see what 350MPI parts might work.
Forum: Restorations & Upgrades
09-25-2025, 04:42 PM
Replies: 3
Views: 1,011
Posted By OGHallett

427 SBC serpentine system

I am in the process of renovating my families 1979 Hallett Mini Day Cruiser with a new engine and stern drive. It currently has the original Mercruiser 5.7 260 with the gen 1 Alpha sterndrive. I have...
Forum: General Q & A
09-07-2025, 05:52 PM
Replies: 53
Views: 14,155
Posted By OGHallett

Thanks for walking me through this stuff. Looks...

Thanks for walking me through this stuff. Looks like adding another hole thru the transom is pretty much unavoidable if I want to hit the 500hp number.
Forum: General Q & A
09-06-2025, 05:17 PM
Replies: 53
Views: 14,155
Posted By OGHallett

These photos were very helpful. I ran the math...

These photos were very helpful. I ran the math and it lines up with what you had previously posted:
...
Forum: General Q & A
09-06-2025, 12:58 PM
Replies: 53
Views: 14,155
Posted By OGHallett

I did not read the last portion of your post well...

I did not read the last portion of your post well enough:picard1: Those calcs make it very clear. Thanks for offering to measure the Y pipe.

And yes, as of now the engine will be built using a...
Forum: General Q & A
09-06-2025, 09:47 AM
Replies: 53
Views: 14,155
Posted By OGHallett

Regarding displacement, I've had a slight change...

Regarding displacement, I've had a slight change of plans. My builder says he can build a 427ci that will still accommodate a standard base circle cam, so I am leaning that direction. I hope to get...
Forum: General Q & A
09-03-2025, 11:04 AM
Replies: 53
Views: 14,155
Posted By OGHallett

Thanks for the suggestion powerboatr . Tbh, I...

Thanks for the suggestion powerboatr . Tbh, I have been worried that I'll need to rework the exhaust system.

Tartilla Doing rough calcs, the motor will be exhausting about 850cfm at 6000rpm. Based...
Forum: General Q & A
08-29-2025, 01:22 PM
Replies: 53
Views: 14,155
Posted By OGHallett

Ok, now that that is out of the way... ...

Ok, now that that is out of the way...

https://cimg7.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/2000x1504/img_0513_813cc0053a5f4bb270552661f72a6cb863f9d156.jpg
...
Forum: General Q & A
08-29-2025, 01:17 PM
Replies: 53
Views: 14,155
Posted By OGHallett

Post 10

Post 10
Showing results 1 to 25 of 34
 
Page 1 of 2
1
2


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.