Stroker Kit

[CharlesS14KAinKS]

I talked to Jason on the phone one saturday a few weeks ago and he said that there was a stroker kit available for my "truck motor" ... i was just curious what the specs were on it ... ie, piston size, compression and what the final displacement would be. anyone know???

[Jason@JGY]

hum......a Palin supporter.......

the crank is $1700, and it uses stock rods and piston specs........meaning CP Pistons and Eagle Rods

[CharlesS14KAinKS]

shes freakin hot man!!!!

[Jason@JGY]

That's the same reason that Mario is voting for Obama.

[CharlesS14KAinKS]

:eek: disturbing!!!!


ok serious question ... is it possible (excuse me cause im not really knowledgeable about this part) to make my 2.4 a 2.6?? :confused:

[CharlesS14KAinKS]

ok to answer my own question yes i can ... however my new question is .. is it possible to keep my stock stroke (or close to it) with with a bigger piston?? theres a kit out there (which due to my jgy loyalty im not allowing myself to purchase!!) from import performance parts that adds 6mm to the stroke and 1.5mm to the bore ... wouldnt this make my redline lower??? definitely dont want that... any suggestions ... other than swap it with an SR??? the plan is to buy another KA and start from scratch with it out of the car so i can still get back and forth to work. im also trying to get alot of power and maintain driveability ... father in law wants me to swap it with a 6.0L ...

Virginia native stuck in SE Kansas American muscle Hell!!!
YOU GUYS ROCK!!

[Jason@JGY]

info/question overload................ so here are some answers

you can increase bore and not stroke...........that's the easiest

Increasing bore normally increases the volume slightly more than increasing stroke. (sorry, I wrote that wrong last night)

The KA motor, as several iron block motors does not have alot of space between cylinders. This is traditional.

You really need to increase the bore to make a bigger KA. You can go to about 2.645L on a KA and still be what I would call "streetable".

Yes, the KA rods are longer than SR's. Then..........compare them to RB's and they seem really long.

When you increase the stroke, you are increasing the wear(in theory) on the rotational mass parts that move vertically.

Think of it this way........... each rotation of the crank makes an stock SR piston ring move 86mm. Let's throw in a crazy JGY-crower 94.4mm stroke crank in there. At idle, or at 7000rpms, both motors are rotating the crank at the same speed. On the first motor, the rings are moving a distance of 86x2. The second one is moving 8.4mm more. Does that mean that it will fail? NO, That is why we use aftermarket Rods/pistons/rings.

Jon's SR that is a true 2.4SR, revs to 7400 before I get worried. That's good enough.

did I answer anything?

also.........your wife know about all those emails that you have been cc'ing us that you have been sending to: http://gov.state.ak.us/govmail.php about getting on your knees for a Klondike bar? Dude seriously!

[CharlesS14KAinKS]

shhhhhh!!! those get sent after shes in bed ... ok yeah you answered alot ... so map out this plan for me ...


2.6L KA ... redline @7000 -7500

how do i do it ... whats the best way ...

ill have a little less than 1000 a month of what the wife considers "disposable income" i think i could stretch a little more outta that ... so while i wont be able to do it next month it wont take me years either ... and i know you guys are big on the SR but i really like the KA for some reason ... maybe its the expense and all the stuff that would need to be changed for the SR


and for EVERYONE!!! seriously im sorry for all the questions ... ive just been a member of the other BS forums for too long and its nice to have an outlet for real/legit info ... and being here in KS noone gives a crap about imports and i refuse to give in

[Jason@JGY]

2.6L KA ... redline @7000 -7500

how do i do it ... whats the best way ...



and for EVERYONE!!! seriously im sorry for all the questions ... ive just been a member of the other BS forums for too long and its nice to have an outlet for real/legit info ... and being here in KS noone gives a crap about imports and i refuse to give in

We can go to a 90mm bore, use their crankshaft and that will take us to a 102 stroke over the 96...........and if we use quality rods, I won't have a problem telling you that 7200rpm will be fine. The only thing we need to know is "turbo or non" so we can decide on your compression.

On a side note, that is one of our goals on this forum. If it's not true, it won't be on here. No BS from guys that have a keyboard and 2 hand tools taking time explaining to everyone how something should be done and how it is done........and they really don't know at all

call for pricing

[Jason@JGY]

quick math here

bore x bore x stroke x .7854 x no. of cylinders = volume in inches
then divide by .061 to go into CC's

So as you can see, the bore has a little more to do with total volume than stroke. That's the easiest answer. What is needed more though is knowledge about redline, where power will be moved to when changing volume.....etc... Also...... piston dome sizing and CC's in combustion chamber also come into play

so for the KA (first convert 89bore and 96stroke to inches = 3.5039 x 3.7795
=2.389.78cc's

The KA motor is limited to how far you can bore it due to cylinder wall.
.......so for the KA, stroking it is the better way to go bigger.......where the SR has to option to go wider on the bore.....

[CharlesS14KAinKS]

dude not math ... now im so confused i forgot what it was we were talking about ... brain freeze from the slushie + math = system shutdown..... i need to go back and read the beginning.

[ShamROCK]

Honestly...

On a side note, that is one of our goals on this forum. If it's not true, it won't be on here. No BS from guys that have a keyboard and 2 hand tools taking time explaining to everyone how something should be done and how it is done........and they really don't know at all

This is what I have always thought was great about Jason as a person, and about JGY Customs the enterprise.

If you can't sell great builds and superior products with honest facts, then I don't think I want to have anything to do with auto performance anymore.

[CharlesS14KAinKS]

well ... i would LIKE to turbo the motor... i think that would get me to where i want to be. I had a 98 but had to sell it a few years ago (son was having surgery) so now ive got the POS 95 and really cant stand the front end. I would like to get another 98 shell, build a strong powerful motor for it and use it for my daily driver. Im noticing that alot of stuff for the s14 is obdII and from what ive read/seen i have obdI... another reason why i want the 98. so i guess to finally answer YOUR question jason .. yeah i think ill turbo it. so 8.8:1 was what i was thinking on compression unless you have a better idea which im sure you do ... once i have a plan mapped out then ill start pricing everything.

[Jason@JGY]

Nissan 95's are mostly OBDII. Infiniti's vary
Your 95 should have an OBDI and OBDII plug though for diagnostic.........which is cool
when we do the wiring service for S13 SR swaps into S14's alot of customers are surprised when we tell them that they can plug into their EXISTING OBDI plug to run diagnostics.

p.s. Mario shaves his legs