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Discussion Starter · #83 ·
Hi guys

I got an E16S Engine with an 15M head, carbed in my 1988 B12 Coupe

(how can i insert a pic?)
Cool, I'd like to check out a pic or two of your B12. I wrote a tutorial on how to post pics HERE. It's not as complicated as it sounds. I just tried to be completely thorough so you would not have to guess on anything.

Mike
 

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So, here some pics of my baby, he's only driven in summer when it's dry just for cruising





The engine was replaced a month ago because the other one burned too much oil and it has to be rebored. The engine on the pics is one i bought 10 years ago and replaced everything that was a bit used it only had 80000 km. Cause it's winter now i took the time to open the whole thing to clean it put some new gaskets and.....



 

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b12brothers, nice looking E16S. i don't really get to see many nice E series carb setups. we only really do the E15ET's here in Ozland. this is my E15ET setup,


how do you find throttle response with your E16S and the 15M head?
 

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Absolutely satisfied you just have to touch the pedal and it goes off like a rocket. Here in Luxemburg all the e16s were imported with this configuration.
84 hp and about 130N/m.(if you want i can take a picture of the whole engine bay)
The e16i i bought 2 years ago (from Germany) is lame compared to the e16s. The e16s exhaust collector is a 4-2-1 and the i-model has(d) a 4-1, i changed it into a 4-2-1 from spare parts and now you can kill the TDI's with it. Throttle reponse is not as good as with the s-model but at 2500 'til 4500 rpm it's a rocket compared to the Primera wagon with an 2.0 litre 16V.

I don't have this charbon-filter-fuel-gases thing, it wasn't needed 'cause in the '80s the emisson control was not that severe than it is now, but i still don't need a catalitic converter, 'cause that emission thing is only when the cars were imported after 1991.

I know it has nothing to do with heads but how does this chokeless hopeless carb look like?
 

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Discussion Starter · #87 ·
I know it has nothing to do with heads but how does this chokeless hopeless carb look like?
You're right that has nothing to do with this E16 cylinder head thread topic.

Best bet would be to start another one with that question please. :)
 

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yep, injected turbo head.
 

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Aha. Just asked to be sure because the casting number is in the head and also on the front like all the heads i collected from several B12 with the E16S engine.
Are the casting numbers stamped on 2 places on every head, because the 33M i bought few days ago has the casting # in and outside.

Earlier in the thread there was something with "shaving" the head, my Nissan bible says that you can cut 0,1mm from the head if necessary when the head is not straight anymore and the same for the cylinder-block that makes 0,2mm but that's the limit.
I did change heads several times (not on my cars), they all were checked and redone by the machinist and never had problems.
 

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Now that we are at the heads what about the valve seats.
My E16I (we call them the german because the only few which are or were running here in Luxemburg are from Germany) runs with unleaded because of the cat.
So, my Nissan dealer told me it would not be recommendable to interchange the heads because they have different valve seats, even by changing timing the engine would not last very long.
As it seems, the seats of a E16I are harder than those of the E16S.
Is it the case everywhere or just here in Europe?
 

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Discussion Starter · #92 ·
That's not the case in the US. All of ours have the hardened seats for unleaded fuel.
 

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For the 33M head 24,5cc there is no need of valve reliefs and the pistons got 17,9cc, right?

The 15M head has only 17,9cc and for this head reliefs are needed because the valves are nearer to the piston top.

My question is, what did they do with the heads to keep the same shape? Itook a look at both and the only difference is the shape of the chamber (spherical and poly-spherical) the cam, rocker arms, valve springs and everything else is at the same place also valve angle is the same or else the rocker arms wouldn't fit. Valve lenght is also the same.

:confused::confused::confused:
 

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Discussion Starter · #94 ·
I'm a bit rusty on E-series head tech, but I believe the valves are 1mm larger in diameter on the 15M heads and that has something to do with the necessary valve reliefs on the matching pistons for those heads too.
 

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Yeah, but what about the head?

I forgot a ? in the last post. So are the valves length different?

The valve reliefs in the pistons for larger valves that's o.k.

Valves must be shorter because combustion chamber is deeper.
 

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the FI head

The 15M head with the 37/31 valves is still available here in Luxemburg under part #11041-73A00 for 1230,47 Dollar (841 EURO) without valves.

I got a used one and I guess that here is the right place to ask if someone wants one.

I would like to keep the head myself but the cost for putting it back in working condition is nearly the double of a new one, so perhaps your shops might do it for less.

So here a little story to the head why it is in this condition and some pics.

few years ago I took off a cyl. head to replace the gasket (did the gasket for nothing because I found out that it was the gasket between the carb and manifold that was bad and here coolant got sucked into comb. chamber) before immobilising the car I took a second head to the machine shop to get it checked to be shure not putting a cracked one one the engine.
When the gasket change was done I gave that head to the shop for a check so I would have an "emergency" head (that's why the surface is so clean).

But a "friend" needed a head because his was cracked and a new one was too expensive.
I gave it to him and got myself another one from the junkyard.

Some time later he gave it back to me in that condition saying that he wanted to replace the guides (why ??? they were good) some are removed some broken and one with a valve stem in it.













 

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hi newbie here, did learn quite lotsa knowledge about e-engine here.
Did any1 know volume of the chamber from the e13 head and the piston??
from the info i get , it has 9.0:1 cr , 76mm bore and 70mm stroke
i get 39.6875 cc combustion chamber from the calculation.
it will raise the cr of e15 and e16 with such small combustion chamber rite?
 
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