Replying to Thread:

marine westerbeake 30 overheats strangely

Created On Friday 6, July, 2007 8:02 AM by mikesailin

Please enter your login information to post.
I want to stay logged in.

Message Title:

Message Text:
bold italic underline
 http link
 https secure link
 ftp ftp link
 mail email link
 LI   Quote  ordered list unordered list

HTML code is not permitted. Special symbols permit some HTML functionality.

Diesel Talk Forum

Diesel Talk Forum
Posts: 1
Joined: Jul 2007

Note Friday July 06, 2007 08:02 View thread in raw text format
Diesel Talk
My sailboat has a westerbeake 30 (4 cylendar) engine. The engine overheated (200 deg F) after less than 10 minutes of being tied in its slip in gear at 1700 rpm. In trouble shooting I found that the thermostat had been removed sometime in the past. After several days of trouble shooting I realized that the engine overheats if there is coolant in the fresh water side, but does not if there is water or a borax flush solution in the fresh water side. When it does not overheat, I can run the engine under load at 1800 rpm for over an hour with the temperature staying under 180 deg F.

I have: cleaned the raw water side of heat exchanger with muriatic acid solution; used external meat thermometer to verify accuracy of temp gauge; back flushed fresh water side with a garden hose; inspected raw water pump impeller; pressurized the fresh water side and found no leaks; flushed and ran fresh water side with borax solution for an hour each time for five times; removed and inspected fresh water pump.

A friend who is a salvor explained it this way. The coolant does not transfer heat as well as water and with the thermostat missing, the coolant is simply passing through the heat exchanger too fast to transfer enough heat.

I plan to return to the boat and install a new thermostat in hopes that the problem will be solved.

Any comments?????

Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Diesel Talk Forum
Posts: 6
Joined: Jul 2007

Note Tuesday July 10, 2007 00:51 View thread in raw text format
Diesel Talk
your friend is correct you have to use thermostat
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum

Adelman's Truck Parts Corp.
Adelman's Truck Parts Corp.
Big Bear Engine Company
Young & Sons Inc.
Diesel Sales
Nationwide Transport Services, LLC
Advertize on Diesel Engine Trader

Customer Testimonials


Subscribe to our mailing list to get all the latest DET well as daily or weekly notifications of new engines, gensets and spare parts listings.

'Thank you very much for the use of "DieselEngineTrader". Our Cummins 6CT-8.3 Engine is sold and we are very happy with your service. We will definitely use it again in the future.'

Horace Crawford, E & E Industries, San Diego. USA

'The engine was on other sites, but we received the most calls from We sold it to the first caller-from Also, there was a waiting list on the engine if the first sale fell through! Thanks for the great service!'

Fran Trapp, South Carolina, USA

'Over 50% of my sales come through - I really like the site, it's the best website for advertising my inventory.'

Jim Williams, Diesel Power Train Co., Colbert, WA, USA