siteunseen

I've got an E31 with exhaust valves for a N head, which are larger and just barely hit the edge of the bore. From zhome.com E31 HEAD '70-71 240Z This head has a 9:1 compression ratio. The quench area is the best of the Z heads with the exception of the P79. As stated before 280 valves are an easy installation and recommended. A note of caution here , however, if the 280 valves are used with a stock 240 or 260 bore ( they're the same) you will need to notch the block for the intakes. They JUST touch and make a hell of a noise ( take my word on this I know). If an oversize bore is used here then clearance is not a factor ( even a .010" overbore will do). This is considered by many to be the "best" head because of the "better" quench area and higher compression. I can't decide which to do here. Please advise me somebody (named Steve).

I read some good stuff last night about Grant's C1297 rings, they could be the ones for me.

I'm not sure what you're speaking of but maybe this will help some how, http://www.classiczcars.com/topic/45387-what-to-do/ Grannynot's post #12

My Nissan Dealership can't get rings, Courtesy doesn't have them either. So where are y'all getting these Nissan rings?????

Well I have an idea of what to do. I took a bare N47 and put the exhaust valves in held up by clothes pins then chucked them to a drill and spun some marks on there. Then I used a pink grinding stone that came with my Dremel. One or two I'm not happy with but I'll get more practice tomorrow.

http://en.wikipedia.org/wiki/There%27s_a_sucker_born_every_minute

How did theses turn out Blue? I'm having a hard time finding rings that I like. Thanks, Cliff

I do want to do it before the machine shop get's it. I'll have those carbon lines and the honing of the bores will make sure everything smoothes together. I can't believe a dremel will cut that, amazing. I use the same thing on my dogs toe nails then the next day (after she get's over being pissed at me) I hit them again with 120 grit. Almost forgot that I've got a spare 2.4 block to practice with, it's never been cleaned either. Now I've got a plan. Gotta have a plan! I've decided to take the valves out of my E31 and try and polish it up some, you and Guy made me jealous, it'll help out my machinist too. The list gets longer...

I swear that's what I thought about. You went the extra step and put the label on the Red-Line, nice touch.

He's talking about the cutting off the side pipe and welding up the hole, I think.

Maybe you could find one from a different car that doesn't have it? Maybe an older Maxima?

Okay, I'll bite. What are the tangerines for? Funnel plugs?

When I went to work Monday and was telling the guys about how bad I felt they said "you mean that little orange car with the new wheels you's just down here in the other day? That's the one you've taken apart?" I sure hope it performs better.

All apart. My hands are hurting, can barely hold my coffee mug or type, but the interior of the motor looks great so I'm happy. Lesson learned yesterday, loosen the crank bolt BEFORE taking the transmission out, not too big a deal but more of a PITA that's not necessary. I put my N47 head on the 2.4 block and the exhaust valve just barely hits. They are swollen and curled up, kinda like these; I did some measuring for the block notching. It's .225" down to the top ring And .10" across to the edge of the fire ring Can I use my pulley with the A/C row removed?

Same here, $1.97 now it's $2.10.

Oh he's killing me too! but in a good way. I like to have something to shoot for. Guy, what head gasket's do you use and do have a preference on fuel pumps? Thanks, Cliff

My N47 had .160"s I'm 99.9% sure. I can measure them later to be sure, for what that's worth (I don't know).

Would Nissan have used a similar product at assembly? The sprocket being out of time with the crank gear has me thinking it's been off before (the head) but they didn't update the valve seats and it was set to #1 hole so I'm not sure. That's what I did. I used the hood latch housing to hold the rear of the motor up until the hoist was holding the weight of the block.

Mine was the plain 75w90, there was no NS on the bottle. And amazon.com was the best deal a couple of years ago too.

All done with the removal part. Now that the cam sprocket is off, TDC lines up with the right mark on the pulley and the oil pump spindle is at 11:25. The sprocket was off a link or so after all. I scratched around the valves seats and they look brass so I'm assuming they're bronze. It had a Nissan clutch that was worn down pretty bad too. I can't decide if this motor's been worked on or not. The head gasket was covered with copper looking paint, what does that mean?

I know that I've absorbed some stray neutrons into my cerebellum, fear and pleasure responses are backwards now. What used to make me happy scares the $^!# out of me. HaHa! That was a dirt dauber's mansion under my exhaust manifold. I'm hoping to get about 2" of concrete poured over the entire garage when I get my foundation firmed up. Just started that project too, 20 ton bottle jack and some screw jacks and a lot of digging. I do better when I have multiple projects going on at the same time.

You'll get a $100 t-shirt like I almost did. I was thinking you had to register but I booked straight through with the Hilton, $119 a night for Friday and Saturday. I think the last club event is Thursday nights riverboat ride then an awards presentation Saturday night? I may have to sneak in.

It's a 2" for sure. It's tight though, I didn't even have the clamp tightened. I'm getting practice on removing heads the right way. It's going to be completely torn out and down maybe today. Thanks for the info on that rusty color on the walls, I did not know that was the reason. It sat for 6 years.

" So I haven't been truly indoctrinated to the pin zed club." You lucky bastard. ​Australian table wine taste like an aborigine's armpit? Some of these Kwik-E-Marts around here have that armpit smell taste like Apu's.

Eurodat can tell you, I'm sure. He's on here early in the mornings.