Tweet
Hi Fellas. After trolling through these pages and other forums, I have yet to find any info on boring out/stroking on 1KZ series engines in the search for more power. Is there a good reason to prevent this? Does the basic design not allow this? MickL may be able to help me out on this. Cheers, Derb.
-
2005 100 Series Landcruiser. 4.2 T/D 5 speed auto. LTD c/w AHC/Leather etc. -
Re: 1KZ-TE increased capacity
any thing is possible but there is alot of home work involved you need to get all the specs on different pistons , con rods and bearings as well as offset grinding crank shafts to increase the stroke - my opinion if your not clued up on the engineering side I would not atempt it as it will cost big $$$ to get some one to find the time to jigsaw a good combination to increase capacity -
Re: 1KZ-TE increased capacity
I'm not sure how the KZ head would really cope with an increase in capacity. I may be wrong But I think I read somewhere that the KZ bores are a little too close for machining as the block becomes a bit thin between cylinders.
Cheers,
Declan.[B]Declan[/B]: [SIZE=1]1997 GXL 4.5 Auto 80 series on [B][COLOR="#FF0000"]LPG[/COLOR][/B], ARB bullbar, 2" OME lift, 32" MTZ, GME UHF, rear ARB locker, Kaymar spare wheel carrier[/SIZE]
[B]PLANNED[/B]: [SIZE=1]3 or 4" suspension lift, 2" body lift (maybe), winch, 35" MTZ + roadies, front locker, sliders, cylinder head rebuilt for [B][COLOR="#FF0000"]LPG[/COLOR][/B], Garret [COLOR="#4499ff"][B]Turbocharger[/B][/COLOR][/SIZE]Comment
-
Re: 1KZ-TE increased capacity
Can't say I've ever looked into this. With forced induction I personally chase power with better fueling/boost/intercooling/intake and exhaust etc, maybe turbo mods depending on the vehicle. This approach generally gives a very good bang for buck result.MickL may be able to help me out on this
In regards to actually doing it I cant see an issue from an engineering point of view. However the cost of this sort of "one of" type development might be frightening.
Without seriously looking at a block and doing some reasearch I'd hate to give any technical advice at this stage.
What I do know is Toyota spec the block as "Throw away" after boring has reached over 1mm over the standard bore. This is also the biggest piston you'll get off the shelf (97mm or 1mm over)
What you really need is a bare block to look at and do some measuring.
Mick[CENTER][B][I][SIZE=1][COLOR=blue]1KZ-TE Turbo Diesel, 5 speed manual, 3.5 inch lift, 265/70/17 Mickey Thompson MTZ, D-Tronic chip, Boost controller, mandrel exhaust, dump pipe, modified intake, ARB steel bar, Magnum winch, Safari snorkel, rear drawers, half cargo barrier, dual batteries, Uniden UHF, Sat Nav, reverse camera, Magellan XL , Tjm bash plates, ARB alloy roof rack, rear telescopic work light and numerous other modifications!!!
Now with 3BAR MAP sensor & 18PSI Boost![/COLOR][/SIZE][/I][/B][/CENTER]Comment
-
Re: 1KZ-TE increased capacity
Thanks Mick. One mill max bore says it all. Not worth the bother unless you can go out 60 thou or more which is around 1.5mm. Might as well stick to the well trodden path. Cheers.2005 100 Series Landcruiser. 4.2 T/D 5 speed auto. LTD c/w AHC/Leather etc.Comment
Comment