Got it running like a champ. Put it all back together (airbox brackets completed). However, I cannot get ahead of a bad oil leak. I cannot ascertain where it's coming from, other than the head gasket. I may need to pull it all back apart and use some sealant between the head gasket and the head.
ZRX1200 Carb Conversion
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1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights. -
What are you running for a cam chain tensioner? I’m running one from a 550 Vision. I had to slot the top mount hole for it to fit. It created an opening into the engine and it leaked. It took a very long time for me to figure that out. I thought it might be the head gasket.Marty (in Mississippi)
XS1100SG
XS650SK
XS650SH
XS650G
XS6502F
XS650EComment
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It's not a V-Max tensioner, but some other older Yamaha model. I saw one of my older posts where I mentioned it. I have the ACCT area RTV'd to death, so I don't think it's from there. I really do think it's from the head gasket. It infurtiates me, as I thought I was done.What are you running for a cam chain tensioner? I’m running one from a 550 Vision. I had to slot the top mount hole for it to fit. It created an opening into the engine and it leaked. It took a very long time for me to figure that out. I thought it might be the head gasket.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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The fact it's running like a champ is awesome. That's a blessing to count.
Years ago I put a new head on the ZRX 1200. I forgot the dowel pins connecting the head to the block. Tightened everything down, but I could see something wasn't right. That head wanted to Slither around too much when I was tightening down the bolts. Yeah, that was a night of frustration yet satisfaction when I did it right lol.Howard
2001 ZRX 1200
1982 Seca 750
1983 Nighthawk 550Comment
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Perhaps a V-Star 650?
It's not a V-Max tensioner, but some other older Yamaha model. I saw one of my older posts where I mentioned it. I have the ACCT area RTV'd to death, so I don't think it's from there. I really do think it's from the head gasket. It infurtiates me, as I thought I was done.
-Mike
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'79 XS1100SF 20k miles
'80 XS1100SG 44k miles
'81 XS1100H Venturer 35k miles
'79 XS750SF 17k miles
'85 Honda V65 Magna ~7k miles
'84 Honda V65 Magna 48k miles (parts bike)
'86 Yamaha VMAX 9k miles
Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65Comment
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1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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I'm going to clean it off real quick, dust it with flour, and take it around and see if I can find the leak.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.👍 1Comment
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-Mike
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'79 XS1100SF 20k miles
'80 XS1100SG 44k miles
'81 XS1100H Venturer 35k miles
'79 XS750SF 17k miles
'85 Honda V65 Magna ~7k miles
'84 Honda V65 Magna 48k miles (parts bike)
'86 Yamaha VMAX 9k miles
Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65Comment
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Welp, I dusted it with AP flour and got it hot. It seems to be from the back of the head, near the rear head bolt. The bolt is tight, so I know it's not that. Odds are, I'll need to pull the head.
Should I pursue a leakdown test to confirm it's the head gasket? I can spray the cylinder head with soapy water? But, i presume doing this on a cold engine may not reveal itself?1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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