mgb260 Jim Nichols Sequim,WA (2463 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Iron 300 front cover issues?
Drill and tap for a nipple in the same location, you need the bypass on a street motor. A guy on V8Buick is using the iron cover and the gasket seals even though the bolt pattern is different. He drilled and used allen head screws. I'll post the link for you:
[www.v8buick.com] Edited 1 time(s). Last edit at 06/12/2022 01:13PM by mgb260. |
Re: Iron 300 front cover issues?
Hi Jim,
Sorry for taking so long to get back on this. I had other responsibilities interfering with chasing this down but I did get around to it yesterday. So with the pump off the automotive 300 I can see that the spigot receiving the hose from the timing cover to the small spigot on the thermostat housing connects to a channel that goes down into the turbine housing in the timing cover. The water pump acts as the cover plate for this little channel and the gasket is cut to accommodate the water flow in this channel. The iron marine pump and timing cover have neither this nor what looks to be a bleed fitting on top of the pump shaft (not sure why one would be needed in addition to the bleed hose going to the thermostat... maybe it's an aftermarket thing?) I found a Youtube video explaining that the 215 automotive engine does not have that channel either. Looking at Image Search it certainly seems the 215 pump looks like my iron marine 300 pump. The 215 pump also appears to have a raised flat boss or a drilling to accommodate a spigot (I guess depending on the year and application). Also I could swear someone dropped a link for a hi-perf water pump for the 300 in the v8Buick sticky, but I've scrolled all 20 pages and can't find it anymore. I'm wondering if a 215 version of that pump is available and if it would work on my engine. With the need for a bleed hose connecting the pump to the thermostat, and the iron timing cover not having that spigot on the back, does that mean I have to order a 215 water pump with bleed hole and spin on an elbow or do I have to come up with something else? |
mgb260 Jim Nichols Sequim,WA (2463 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Iron 300 front cover issues?
David, Sounds like the 215 pump should work with a bypass hose. Flowkooler has high performance water pumps. They don't have one for the 215 but the 300 one should work if you add a nipple where the plug is.
[flowkoolerwaterpumps.com] Edited 1 time(s). Last edit at 06/30/2022 02:08PM by mgb260. |
MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Iron 300 front cover issues?
My original 215 WP does not have that raised boss. Both of my Buick 300 WPs have the threaded hole with a plug in it. I use the 300 WP because it angles down a bit under my alternator.
I can get you a pic if you like. |
MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Iron 300 front cover issues?
MY 300 WP has had an alternator adjuster arm attached to it for 21 years. The lower bracket is fastened to a head bolt.
Not sure a 15 minute vinegar solution is aggressive enough for the rusty internal water passages on your 300. Maybe Evapo-Rust for a longer period of time? |
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