What I did, and yes I did learn the hard way, is to use Langley pistons, why because someone told me they are a drop-in replacement for the A15 pistons. so I believed this guy and went forth, only to discover that the piston would now stick out about 3 mm. in hind site, it would have worked like a charm, if it was an A14, So I'm not dissing this guy he probably did know, just that he did not realize mine being an A15, that it would mount to this much effort....

so I took 1.5mm off the top of the pistons, giving me a nice wide squish-band. Then chopped the rods 1.5mm. This to get me to what I can imagine to be a tad bit higher than Std CR. Now what... I went and got a Shim plate and sandwiched it between two gaskets, and Whua-laa.... been running at 1.2bar on 95/93 ever since....

This is some really good ####.... I would imagine the pistons being of a bit higher strength. he is running at about the boost levels I'm at and I'm pretty sure my A15 is not even in the parking lot of that ball-park.

I can not imagine how porting can make such a massive difference. but from that video, the way the run sounded, you can actually see that it is making massive power, and for it to pull through 3rd that fast.... so fast that some might even think it 2nd gear.... that to me, said it all... even if the actual figures are off.... that thing kicks ASS big-time....

At risk of being totally on topic here. a14 internals is good for I'd say anything up to 10PSI,

Drop the compression with a sandwiched shim-plate 0.9mm thick, and then use Langley pistons, and you can go all the way up to 16PSI on pumpgas and still run descent timing....
or 20PSI on something a bit better,

here is my block, this is however an A15, so I had to do some work on the pistons, As they stuck out through the deck, them being for the 1400... these pistons are not forged but they are damn strong for not being forged, As first I was skeptical...



the exhaust manifold was a bitch....

take out all the spark plugs and snap a pic of them, upload it so us old farts can have a look..... Spark-plugs Speak volumes on the health of an engine.

My philosophy on brakes are simple......




you can't have big enough brakes....

This setup is comprised of the std Ute struts, (like in the struts that had drums on b4)
VW Caravelle vented disks.
Camry calipers. (but really any vented disk caliper will work.)

obviously, you should note that this was on a severally restricted budget, else I would have had wilwood's on.. :)

fabrication includes the 2 brackets that hold the calipers, and the holes in the disks for the studs.

The spacers are so the 14" rims could clear the Struts.This conversion does require the use of bigger rims, 13" rims don't fit no more....

Indeed I am, but as average as these boxes might be, this one is actually stronger in every way I can detect, compared to the Nissan box. Both the input and output shafts are one spline thicker , the one thing I do like is the gear-shift that can be bolted off, to add oil, So I can even do it in the rain, and not get wet. So far all is going to plan, the clutch cable almost did not clear the starter, but it did, so all's well there, I just took my clutch plate in to get the center changed to the right size, While I was at it, they are going to lighten the flywheel as well....
SHould be fun....

damn this is easier than I thought, or maybe should I keep my mouth shut, I'm not done yet :)

yeah I know but it's all I have to work with here...

my 4-speed croaked last week, so I'm kinda desperate to get this thing running again.

both boxes are the same in overall length. the Toyota box has thicker input and output shafts, that's good but bad, I need to get new clutch and have the Prop-shaft re-fit.

the K40's ratios......
R=-4.316
1=3.789
2=2.220
3=1.435
4= 1

any one know what the Nissan box's ratios are. it's an old 1200 smooth housing box.

Basically I'm gonna be getting into both with a grinder, then tig-weld the Nissan box's B-housing onto the k40's body, and try to do this with it's all lined up straight...
Then I'll have to hope the clutch still works...

will take some pics tomorrow.

any advice b4 I go and gutt a helty toyota box to bit's.... now's your chance... :)

CAR: 1400 Bakkie
MOTOR: A15
G/BOX: 4speed a12
DIFF: Nissan std
TURBO: Garret t2 at 0.7bar with 95octane (horse-urine)
INDUCTION: Custom EFI,Gotech,
EXHAUST: 63mm 308 stainless one muffler
WHEEL/TIRE: Goodyear 175\14\70 rear....Michelin 185\14\50 front

on Langley rims

1/4MILE: 15.2 @ 157Km\h

Suweeeeettttt