the main oil jets to the cam shaft is different as well, quite easy to identify as there is "like " a mesh in the jet Gary UK ----- Original Message ----- From: "Rene CM van Maanen" <[EMAIL PROTECTED]> To: "Multiple recipients of list" <[EMAIL PROTECTED]> Sent: Saturday, November 29, 2003 4:40 PM Subject: RE: 750 Head Trade Anyone?
Brian, A few hints, but definetely not complete * The earlier heads (like you *should* have) has only 4 valveseals, on the inlet valves only. * 1975/76 heads would have a clear 392 stamped on the top, outside. * F2 heads would have bigger valves, clearly identifyable. * K7 heads would have a larger combutionchamber cutout in the head. This is to compensate the small dome on the pistons of the K7, which improved (lowered) compression (compared to an F1, which also carried the domed piston). * IMHO all other heads are the same....... You're next...:-))))) ____________________________________________ Ren� van Maanen HONDA SOHC/4 Specialist CB350F CB400F CB500F CB550 CB750 Reparatie, Restauratie, Onderhoud en Onderdelen Apeldoorn, Netherlands Mob: +31 (0)6 1484 6559 Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Website> honda4.nl <http://www.honda4.nl> -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brian Hoover Sent: zaterdag 29 november 2003 16:39 To: Multiple recipients of list Subject: 750 Head Trade Anyone? Is there any identification numbers anywhere on a given head to determine what engine it came off of? I have an early engine #1010918 that I pulled out of a 1975 F1 frame. The engine was stuck. When I removed the head I found a little 6mm cam holder nut stuck in an exhaust valve. I'll guess that this was the reason for the freeze. I assume the head is from an F1 because it had the factory F style 4 into 1 exhaust . The exhaust flanges are different the earlier K models and won't except a factory 4 into 4 setup, right? I'd like to rebuild this engine one day and use it as a back-up engine for my 1969KO that I'm restoring. If anyone knows how to distinguish between head types, I would love to trade this perfectly good F1 head for a comparable one to fit my early engine. I can send pics. Thanks, Brian Hoover Cedar City, Utah 1973K3, 1969KO, 750's
