Guys I have been sparked on by the commentary about eh E15 and A15 motors and in particular cranks being basically the same. I thought someone said they would actually bolt in as far as
the main bearings go.
My idea is to take the cam belt drive off the E15 crank and put in on in place of the chain drive and somehow mount the E15 cam pulley on the A15 cam and have an exposed belt drive set
up. Also have to block off the oil feed hole. Any ideas.

>My idea is to take the cam belt drive off the >E15 crank and put in on in place of the chain > drive and somehow mount the E15 cam >pulley on the A15 cam and have an exposed
>belt drive set up. Also have to block off the oil >feed hole. Any ideas.
>
seems like alot of work for no gain in displacement,why not keep the A15 crank ?

Not so crazy. I would like to have a belt drive for my 1200s. Makes changing the cam timing simple. Let me know when you figure it out.

The sports racing guys over here are putting the E15 heads on the A engines, they say its a simple swap. I have to take a closer look at one and see how they seal the
front of the crank.

Bob

while this may seem like a wonderful idea, I hate to be the one to rain on your parade. without some major re-engineering, there is no way that you will be able to do this.
A series have the oil pump driven off of the camshaft, while E series have the oil pump driven off the crankshaft. as in the oil pump on the E series is the cover for the lower front
of the block and the oil pan, on the A series this area is covered by the timing cover, (the cover for the timing chain and gears).
as a personal opinion, from someone who professionally repairs cars, I would like to make a comment: timing belts are a pain in the backside. they have a life expectancy of about
60,000 miles, if they are not that durable, they break at what is usually the worst possable moment. and the idea in not worth the expense required to make it happen.

chain drive kicks, pretty much all new nissan engines are chain driven now, belts suck, especially exposed ones, straight up, one stone and its all over man, specially with the fan
firing straight into the belt, the fan stirs up a lot of dust and stuff, doing an auto x i ended up with a bit of grass and stuff sitting round the cover and all that, just look at a
V belt that picks up a stone, its all over for your p/s or water pump whatever. but its up to you man, i wouldnt risk it, plus no one could see it down there anyways. sweet though if
you try it.
you would have to make sure teeth count was right, match up a belt and fit in a tensioner.
choice from chris

oh yeah and timing belts are used because they are cheaper to prouduce
than a chain.

Ypu miss the point. I am not interested in the E15 crank. I want the E15 cam and crank pulleys to make a belt driven A series cam drive instead of teh sometimes noisy chain. Then if
I can that set up I will look at a vernier adjustable cam pulley for perfect cam timing adjustment and dial in.
I must also admit that looks also play a large part in the thought process.

Where are you Bob. What is your name BOB. It starts with a B Bob and ends in a B Bob. Sorry that's a line from a Cheech and Chong movie I once saw.
I have had a look at the E15 head as that was my original idea. The bolt holes line up but the water jacket and oil galleries are not even close, any idea how they do it.
The front of the motors look the same. If the alloy housing is removed it looks like the E15 water pump would mount straight in the same place but straight to the steel block not the
alloy case. My guess is that you wouldn't need t seal the front of the crank but maybe use the E15 front seal anyway. You would have to block the oil feed hole for the timing chain.
The E15 still runs a pulley in what would be the A series cam position as they still have a dummy camshaft that is there just to run the fuel pump.
As I say it all looks so similar but I didn't measure exactly as I thought it was a lost cause with the mismatch in the head.

Rgrinder1, thanks but I don't totally understand what you are saying. I don't know if its your typing but you lost me with "as in the oil pump on the E series is the cover for the lower
front of the block and the oil pan".
To me and i must admit I have only had initial looks it looks like the layout and spacing of everything is the same. My intention would be to ditch the cover or at least cut away the front
section leaving just the back and sides. If I ditched it it may be possible to run the E water pump and use the E front crank seal if needed. This wouldn't be needed if I kept the alloy
cover.
Please explain again the importance of the oil pump as my idea (before I compare further)is that the toothed gear will slide straight on the front of the crank and I just have to mount the
outer section of the E cam pulley onto the inner of the A pulley.
I like to have something different as long as it doesn't cost an arm a leg and two tits and as I grew up with Fiats I have a fondness of belt drives and a dislike of cam chains. Longevity is
not an issue with the cheap cost of belts.
Again stress that my comparisons are not complete as initially I was looking to see if the E15 head could be used. Any further help would be appreciated.
Machining etc I can get done cheaply as I have many friends with the necessary lathes etc.

I'm in the US, New York to be exact. I'm an SCCA racer, we run a rear wheel drive tube frame Sentra powered by an A series engine and a tub framed 1200 of course this car also uses an A
series. Both of these cars compete in the SCCA GT5 class. Before we switched to the Nissans we ran a Civic 1200 that had an adjustable cam pully. Believe me a small change in cam timing can
result in good power gains as well as getting the power where you want it.

I'll try to get more info on the E series head swap. The guys that are doing this run in the sports racer class. They are formula cars with envolope type bodies. All of these engines are
dry sumped and use a belt driven oil pump. I don't know if they run a cam in the block or not, I also don't know how they get oil to the cam in the head, I don't remember any external lines
but I'll try to find out.

Let me know when you build the belt drive

Bob