skyblue Posted April 15, 2015 Report Share Posted April 15, 2015 The most important thing when pulling the head is keeping the chain tensioner from popping out. You can wedge a screwdriver handle down in there or get one of these: http://www.amazon.com/gp/aw/d/B0002Q8TV4/ref=mp_s_a_1_1?qid=1429108495&sr=8-1&keywords=datsun+chain+tool&pi=AC_SX200_QL40&dpPl=1&dpID=31V0G12PR8L&ref=plSrch Prior to that you should drain the coolant, unbolt intake and exhaust manifolds. Disconnect all hoses. Unbolt cam bolt holding sprocket on. Wedge screwdriver or timing chain tool in between chain. Take off sprocket and set chain aside. Unbolt head and and voila. 1 Quote Link to comment
Busta Nut Posted April 15, 2015 Report Share Posted April 15, 2015 Here's what it looks like with everything removed........ Quote Link to comment
demo243 Posted April 16, 2015 Author Report Share Posted April 16, 2015 Gonna hold off on tearing it down… But heres more- In the never ending ordeal of shit that doesn't fit on my datsun... 510T kindly let me borrow one of his 13" minilite wheels… and damn it it doesn't fit… this brake kit is supposed to fit "most" 13" wheels… excluding tylers minilites and my steelies… 0 for 2 as of now It just barely catches the caliper… can't really see it since the scuff on top was so small it rubbed off Then the next item up for test fitting that failed was the T3 heat shield I picked up. Looks like it would clear fine on the longer Cannon style manifolds… but I have the nice short Mikuni one…. and no love. The # 4 header pipe comes out at a 90 degree angle making it a no go ... going to shoot T3 an email on it and see if they have dealt with this before…. But… most likely going to do some custom bending and cutting to make it fit… here are my two initial cardboard templates I think even with those sections of header sticking out it will still be worth putting on --- oh and you can see where the #3 tube has already been clearanced to help fit the carb. Not going to do anything till I get the Mikunis as they may not need as much clearance below them as the Webers did, so I might be able to just bend the shield up more and cut out less 1 Quote Link to comment
datsunfreak Posted April 18, 2015 Report Share Posted April 18, 2015 If you cut the top half off and mounted it past the carb flange (like these), instead of between the carbs and intake, you'd get another 1/2" out at least? Quote Link to comment
demo243 Posted April 20, 2015 Author Report Share Posted April 20, 2015 If you cut the top half off and mounted it past the carb flange (like these), instead of between the carbs and intake, you'd get another 1/2" out at least? Could be possible... Quote Link to comment
demo243 Posted April 30, 2015 Author Report Share Posted April 30, 2015 Nothing really good to update...Car has been sitting like this for a while...Finally got around to customizing the T3 heat shield I picked up... At this point I'm kinda wishing I disn't start, and I just sent it back. ...Cut the holes for the #2 and#4 pipe clearances ... Only to realize #1 needs a clearance too... Also had to add some more bend to it...And only after realizing all that did I realize that the holes for the fuel/air to go through are 1/4 smaller then those on the intake... Not sure about the Mikunis I am waiting on... But the spacers are the same size as the intake ...I'm worried about this disrupting the flow of air/fuel...,Also had to file out the stud holes...At this point I might just call it a loss and give up on it... Quote Link to comment
skyblue Posted April 30, 2015 Report Share Posted April 30, 2015 Damn. That's a lot work. Sucks. Might as well fab up your own. Quote Link to comment
datsunfreak Posted May 1, 2015 Report Share Posted May 1, 2015 I would ditch it. It's not really a heat shield any more is it? All those holes and it might not be much better than not having it... Quote Link to comment
Lockleaf Posted May 1, 2015 Report Share Posted May 1, 2015 I guess I'm bitchier than the rest of you. By the time I put that much effort in to something, quitting is admitting that it won and I have been defeated. Never give up, never give in! Finish the heat shield. 1 Quote Link to comment
datsunfreak Posted May 1, 2015 Report Share Posted May 1, 2015 By the time I put that much effort in to something, quitting is admitting that it won and I have been defeated. Never give up, never give in! Finish the heat shield. I'd at this point be making my own. Which is probably what I'd have done in the first place. ^_^ In fact, I think I'm going to go buy some stainless tomorrow and make one for my car... :rofl: Quote Link to comment
datsunfreak Posted May 1, 2015 Report Share Posted May 1, 2015 Hope it works out though. :thumbup: Quote Link to comment
demo243 Posted May 1, 2015 Author Report Share Posted May 1, 2015 I guess I'm bitchier than the rest of you. By the time I put that much effort in to something, quitting is admitting that it won and I have been defeated. Never give up, never give in! Finish the heat shield. Kinda on this train of thought... Started and need to finish it... Might wait for my carbs to show up before finishing... Quote Link to comment
demo243 Posted May 1, 2015 Author Report Share Posted May 1, 2015 the other thing i realized is that i will probably need a gasket between either the intake and the shield or the carbs and the shield…. since there is a double o ring plastic spacer between the carb and the manifold Quote Link to comment
Duke Posted May 1, 2015 Report Share Posted May 1, 2015 Just a heads up. The O ring style insulators that you have will not work with 44mm Mikuni's. The flange on the Mikuni's has a plugged hole that will cause a vacuum leak if used with this style insulator. Have Todd at Wolf Creek send you the correct insulators along with your carbs. Quote Link to comment
demo243 Posted May 1, 2015 Author Report Share Posted May 1, 2015 Just a heads up. The O ring style insulators that you have will not work with 44mm Mikuni's. The flange on the Mikuni's has a plugged hole that will cause a vacuum leak if used with this style insulator. Have Todd at Wolf Creek send you the correct insulators along with your carbs. Hmmm Todd said this was the style he used.... I'll have to confirm with him Quote Link to comment
Duke Posted May 1, 2015 Report Share Posted May 1, 2015 He does use the "O" ring style, but not the Weber style that you have. I ran into this issue a while back and had to have Todd overnight some insulators to me so that I my car would be ready for a race that weekend. There is a special Mikuni style that has a bump to fully seal the flange. Here is a picture of what they look like, and also a picture of the mikuni flange where you can see why the bump is needed. 1 Quote Link to comment
demo243 Posted May 1, 2015 Author Report Share Posted May 1, 2015 Ahhhh ok Thanks for the heads up I will have have him send me a set with the carbs Quote Link to comment
datsunfreak Posted May 2, 2015 Report Share Posted May 2, 2015 i realized... that i will probably need a gasket between... the intake and the shield... This. But you can probably get by with a little high-temp silicone to seal it up. Quote Link to comment
demo243 Posted May 2, 2015 Author Report Share Posted May 2, 2015 If I end up running it I'll probably run those thin rubber idolaters Quote Link to comment
demo243 Posted May 10, 2015 Author Report Share Posted May 10, 2015 Finally a worthy update! She is ALIVE!!! My Mikunis showed up yesterday, so I immediately got to work. Here are the specs that Todd at WolfCreek set me up with based on having dished pistons, electronic ignition, and my cam specs Initially bolted on - went with short stacks for filter clearance (pics below) I spent soooo much time trying to figure out the throttle cable mount… I had shortened it for the old webers and this made it tough as I couldn't bring it up over the fuel line. tried possible a hundred different options last night before giving up… went out and got another piece of aluminum stock this morning and came up with this (Below). the first version stopped shortly after the bolt… but this led to it spinning when the throttle was pulled all the way… so the second version I lengthened it to butt up agains the Jet cover, which keeps it from moving. not the prettiest.. but it works. Runs pretty damn good… fired right up with no adjustments. played with it a little bit to make sure the two carbs were synched. Its running pretty rich so I may try a smaller set of jets… but need to pull the plugs and see how they look. Sounds great! Best she has ever run I think. Heatshield is on hold for now… need to get some longer studs for the manifold… and gotta figure out a couple other things. Did have time to mess with it, as I needed to get my daily driver in the garage to check out an issue, so the sole focus was getting the datsun running under her own power so I could pull her out and back in. 3 Quote Link to comment
Duke Posted May 10, 2015 Report Share Posted May 10, 2015 Looks good! I bet it doesn't run rich without the Uni Filters on. Something like K&N, Pipercross, or ITG filter would be much better. There is so little surface area with the pod style Uni filters that they can be really restrictive. Quote Link to comment
demo243 Posted May 10, 2015 Author Report Share Posted May 10, 2015 Looks good! I bet it doesn't run rich without the Uni Filters on. Something like K&N, Pipercross, or ITG filter would be much better. There is so little surface area with the pod style Uni filters that they can be really restrictive. I like how easy these are to take on and off for tuning or track use So after driving around yesterday my front plugs look like this And my rears like this Any thoughts or suggestions? I can bump up for down two fuel jets if needed Quote Link to comment
FirstDime Posted May 10, 2015 Report Share Posted May 10, 2015 Wow they look great, congrates.. The uni filters work perfect with the short stacks, smart choice!!! Can't wait to see this back on the road.. Quote Link to comment
Duke Posted May 10, 2015 Report Share Posted May 10, 2015 My ITG filter comes off with 3 quarter turn fasteners. I don't even need any tools. Doesn't get any easier than that. In regards to the plug, what is your procedure for reading them? IMO, the best way to do it is do a few full throttle runs up to redline, then shut the motor down immediately and pull the plugs to check them. If you pull them after any easy driving or idling, you are just seeing the idle/easy driving conditions, which really don't matter. Or buy a wide band, and take all the guess work out of it :thumbup: . Quote Link to comment
demo243 Posted May 10, 2015 Author Report Share Posted May 10, 2015 My ITG filter comes off with 3 quarter turn fasteners. I don't even need any tools. Doesn't get any easier than that. In regards to the plug, what is your procedure for reading them? IMO, the best way to do it is do a few full throttle runs up to redline, then shut the motor down immediately and pull the plugs to check them. If you pull them after any easy driving or idling, you are just seeing the idle/easy driving conditions, which really don't matter. Or buy a wide band, and take all the guess work out of it :thumbup: . Not much easy driving but enough to get it back in the garage - I'll give that a shot Quote Link to comment
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