rockerbillykat Posted January 27, 2011 Report Posted January 27, 2011 Gidday all. I am in the process of re-assembling the flatty. New gaskets and seals are done. Ive had the flywheel machined,the clutch plate and throw out bearing checked. Now the problem i have is,there are two welsh plugs at the rear of the block, one is for the cooling and one for the oil. I would like to change these two,while the fly wheel is off as i believe they could be the wrong type of plug,they are both cup type. I know that the 5 in the side of the block are 1 5/8 inch, so what size are thr 2 in the rear as they look alot smaller? Thanks, Rockerbillykat. Quote
Andydodge Posted January 27, 2011 Report Posted January 27, 2011 Rocker, is this for a 23" engine?.......my 230 has 3 plugs on the rear of the block, small one about 1/2" on the oil gallery, and 2 each about 1.25", one for the cam and the other is a water jacket plug, all I have removed and didn't try to measure the holes as the block is on an engine stand & the stand brackets are attached to the flywheel end of the block........can't you just take the plugs out, measure & get new ones?.......andyd Quote
rockerbillykat Posted January 27, 2011 Author Report Posted January 27, 2011 Gidday Andy, ive got the 25" block,228 i think! I have got the same problem at the moment. My engine is on a stand and i cant access behind with out spending an hour setting up the lifter,unbolting,then rebolting to the stand. When i removed the gearbox i just happend to see these plugs when i removed the fly wheel and noticed they were cup shaped and wondered if they were correct. I want to change them as a matter of course as im replacing the plugs on the side of the block! I had planned to pick up the plugs tommorow,so i can put every thing back together over the weekend,paint the engine and get it back in the car. Quote
Niel Hoback Posted January 27, 2011 Report Posted January 27, 2011 If those plugs didn't leak, they must be the right ones. The cups and discs are interchangable, but personally, I think the cups do a better job having more sealing surface. IMHO. Quote
Dodgeb4ya Posted January 28, 2011 Report Posted January 28, 2011 The bigger core plug is a 1-5/8" size- OE is brass, the smaller ones are 1-3/8" size. Bob Quote
rockerbillykat Posted January 28, 2011 Author Report Posted January 28, 2011 Thanks Dodgeb4ya, that really helps,i had tried the search reference but couldnt find any mention of actual sizes. If i had checked the plug sizes before i bolted the motor up to the stand i would have known,but you learn as you go i spose! Thanks again for your help. Rockerbillykat. Quote
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