Head skim requirement?

MA70-3.0GT · 12-06-2009, 02:11 PM

Not uncommon to find loose bolts? Why would this be, especially after (rough estimate) 3 or 4 hours running time, if that. And would re-torquing after say 250 miles be worthwhile?

Anyway I took some pics the other night, some aren't as good as they looked on the camera but as the computer's at my folk's house I ain't going all the way home to get more!!!

First one you can just about see where the gasket's blown, although if you remember I said that bits of what looked like gasket material appeared in the top of the rad, it was & was from between the coolant passages & fire-rings on all but number 5!!!

Second to last is well out of focus but you can see the fresh hone-marks on the previously rebuilt lump & the ones either side are just to show what a sexy re-con head looks like, even if it didn't last five minutes! Head measurement by the way shows about 10 thou removed. Would this be reason enough to need a thicker metal gasket? Hope not or it's going on Ebay!!!

EDIT-: and yes, before anyone asks that workbench IS the bathroom door thrown over the top of the tub!!!

12-06-2009, 02:11 PM	#8
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Not uncommon to find loose bolts? Why would this be, especially after (rough estimate) 3 or 4 hours running time, if that. And would re-torquing after say 250 miles be worthwhile? Anyway I took some pics the other night, some aren't as good as they looked on the camera but as the computer's at my folk's house I ain't going all the way home to get more!!! First one you can just about see where the gasket's blown, although if you remember I said that bits of what looked like gasket material appeared in the top of the rad, it was & was from between the coolant passages & fire-rings on all but number 5!!! Second to last is well out of focus but you can see the fresh hone-marks on the previously rebuilt lump & the ones either side are just to show what a sexy re-con head looks like, even if it didn't last five minutes! Head measurement by the way shows about 10 thou removed. Would this be reason enough to need a thicker metal gasket? Hope not or it's going on Ebay!!! EDIT-: and yes, before anyone asks that workbench IS the bathroom door thrown over the top of the tub!!! Attached Thumbnails __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! Last edited by MA70-3.0GT; 12-06-2009 at 02:19 PM.