Piston Tech

Lazarus_023 · Oct 2nd, 2003, 05:11 PM

Piston Tech, E-series...

(perhaps this could be sticky some day?)

I have some piston p/ns for E-series engines. Feel free to post any additional info, and i'll fill it in.

12010-01M00 - Piston E13s
---76mm bore
---32.5mm comp. ht.

12010-01M02 - Piston E13s
---76mm bore
---32.5mm comp. ht.

12010-01M10 - Piston E13s
---76mm bore
---32.5mm comp. ht.

12010-01M12 - Piston E13s
---76mm bore

12010-01M22 - Piston E13s
---76mm bore

12010-13M22 - Motorsports Piston/Pin (E16, STD)
---76mm bore
---32.5mm comp ht.
---crown top
---approx 18cc volume
---comp. ratio: 10.8:1 (18cc head), 9.4:1 (25cc head)

12010-11M02 - Piston E15s
---76mm bore
---32.5mm comp. ht.

12010-11M12 - Piston E15
---76mm bore
---32.5mm comp. ht.

12010-11M22 - Piston E15
---76mm bore
---32.5mm comp. ht.

12010-15M02 - Piston E15
---76mm bore

12010-17M12 - Piston E15T
---76mm bore
---33.5mm comp. ht.
---NO VALVE RELIEFS

12010-17M13 - Piston E15T
---76.25mm? bore
---33.5mm comp ht.
---crown top
---approx 24cc volume
---NO VALVE RELIEFS
---comp. ratio: 7.8:1 (18cc head, E15ET ONLY)

12010-19M02 - Piston E15s
---76mm bore
---32.5mm comp. ht.

12010-19M22 - Piston E15
---76mm bore

12010-31M02 - Piston E16
---76mm bore
---32.5mm comp. ht.

12010-31M12 - Piston E16
---76mm bore
---32.5mm comp. ht.
---crown top (2.35" dia. head recess 0.360" deep)
---approx 18cc volume
---rings: 2x 1.5mm 1x 4mm, pin dia. 0.7845" (offset)
---comp. ratio: 10.8:1 (18cc head), 9.4:1 (25cc head)

12010-31M22 - Piston E16
---76mm bore
---32.5mm comp. ht.

12010-33M22 - Piston E16
---76mm bore
---32.5mm comp. ht.
---crown top (2.35" dia. head recess 0.360" deep)
---approx 18cc volume
---rings: 2x 1.5mm 1x 4mm, pin dia. 0.7845" (offset)
---comp. ratio: 10.8:1 (18cc head), 9.4:1 (25cc head)

12010-61A01 - E?

12010-41M02 - Piston E10s
---73mm bore

12011-73A00 - Piston E16
---76mm bore

NOTE #1: All compression ratios calculated with 1mm thick (compressed height) head gasket and 0.00mm deck clearance.

NOTE #3: it would appear that E13, 15, & 16 pistons are largely interchangeable, in fact, i see the same p/ns listed w/ different descriptions quite often. i would be a little unsure of compression ratios, unless someone can dig up piston volume info...

***Aftermarket pistons are available, but not at all common for such an old and unpopular engine. I am investigating sources, including:

-Topline, http://www.theonlysource.com/index2.htm (they list pistons for E15 and E16 engines, but i haven't found any specs yet...)

***Custom pistons can be ordered from several sources, including:

-Arias, http://www.ariaspistons.com/ (forged, cost about $500/set)

-Wiseco, http://www.wiseco.com/ (forged, about $400-$500/set)

-Ross, http://www.rosspistons.com/ (forged, about $450/set)

and many other... look around, there's good stuff out there.

Lazarus_023 · Oct 22nd, 2003, 09:55 PM

updated with:

12010-17M13 - Piston E15T

Lazarus_023 · Oct 27th, 2003, 11:53 PM

E10 and E13 were not for the US market. The engines were similar in appearance.

E10: 988cc
---Bore x Stroke: 73x59
---Connecting rod: 152?!?!

E13: 1270cc
---Bore x Stroke: 76x70
---Connecting rod: 146.5?

E15: 1488
---Bore x Stroke: 76x82
---Connecting rod: 140.5

E15ET: 1488
---Bore x Stroke: 76x82
---Connecting rod: 137.5

E16: 1597
---Bore x Stroke: 76x88
---Connecting rod: 137.5

Please post any additional info. Thanks.

Crazy-Mart · Oct 28th, 2003, 03:40 AM

"Are the cranks on these engines any diferent or do they all use the same crank with diferent conrods??."

they use 2 different cranks known for the long trow E16 unit and a shorter one for the E15et

Lazarus_023 · Nov 9th, 2003, 01:03 AM

updated with info on
12010-17M13 - Piston E15T
12010-13M22 - Piston, Motorsports E16

Lazarus_023 · Sep 11th, 2004, 02:53 AM

bumpity.

BeEleven · Sep 15th, 2004, 06:36 AM

Are you sure about the E16/18cc combo being 10.8/1? I came up with 11.1:1...but i used 17.9 in my calculation. Don't know if that would make that much of a difference.

gspot · Sep 18th, 2004, 08:13 PM

Here's some pistin dish volume numbers I got from NISNO a while back:

11M - E15 - 20.3cc
13M/15M (both non-USA) - 25.6cc
17M - E15T - 25.6cc
19M - E16 - 23.6cc
31M - E16 - 17.0cc
33M - E16 - 19.0cc (had 17.0cc in parentheses so I'm not sure which is correct)

Lazarus_023 · Dec 27th, 2004, 08:17 AM

hmmmm... somewhere along the line, some of the E15ET info got lost....

The original post should have:

NOTE #2: E15ET pistons are tricky, they are actually TALLER than standard E15/E16 pistons, the trick is, the E15ET uses the shorter E16 connecting rods, resulting in excessive deck clearance to lower the compression. due to the extra clearance, no valve reliefs are necessary with the stock cam. E15ET pistons are also heavier around the head and top ring land to deal with the excess heat of turbo-ification.

shift_of_legend · Mar 1st, 2005, 09:08 AM

Can someone post pictures of the E-series and CA series pistons here please?

Lazarus_023 · Aug 18th, 2005, 12:01 PM

soooo.... i got really bored. i noticed that ga16de pistons are also 76mm. same pin dia, too. lower compression height, tho... 29mm vs 32.5mm. interesting, i thought.

with some minor work... ie decking the engine block about 0.020", adding valve reliefs to the pistons, and some other minor details, it would be possible to put the longer E15 rods in an E16, improving the rod/stroke ratio.

long rod E16, anyone?

also... looked at kb-silvolite.com they have replacement E and GA pistons listed... as well as some others.

E-serious B-12 · Aug 18th, 2005, 09:57 PM

I've got GA16DE pistons and rods in my E-16.Easy swap no modifications needed just put them in place of the E-series parts.With the stock camshaft it has 205 lbs. cranking compression and runs great!It's a good swap.You get more comp.,longer rods,stronger piston because it doesn't have a slot around the oil ring groove and thinner rings for less friction.An upgrade to this swap wouldbe GA16I connecting rods.I have a set and they make the DE rods look like toothpicks,the beam is alot thicker but I used the DE ones because I want to see how much abuse they will take on the upside they are a little lighter.

LimeyRich · Mar 4th, 2006, 10:37 AM

Just found this thread. Very interesting! How does your GA16 piston/E16 ride act on the street? any ping from that high compression? Can you run regular 87 octane gas?

velardejose · Apr 28th, 2006, 11:53 AM

Hi
Asuming the e15et and the e16 blocks have the same crank center to deck height length
From the numbers above (stroke, rod length and piston pin to top distance) the e15et piston would be 2 mm lower than the e16...
Or am I wrong?
Peace

doggitter · May 8th, 2006, 07:50 PM

Ok, I've got questions too.

gspot, are you talking about combustion chamber volumes? The number you post are head casting numbers, aren't they? Or are the pistons labeled with some of the same casting numbers as heads??

Lazrus, the A15 piston in my catalog lists as 30mm comp. height. They would gain a bit over the Ca's. They are also the same pin dia. but have .5mm offset. No data on dish size though, as where several other's dishes are listed. The E15 rod/A15 piston is where I'm headed so far..

ESerious, do you have a compression ratio figure for that setup or just the cranking pressure??

I did some calculation/figuring with autocad and came up with a 12.1cc dish area in the E16 piston. I can see that figure MAYBE being 2 cc's off do to measuring errors, but no more than that. And I think it's a lots closer than an error of 2cc.

Thinking a bit more on the setup I'm using, we'd get more compression with using the E15 rod length and shaving the top of the piston and milling valve pockets, instead of lowering the piston.