nahonda04

I wasn't going to make a build thread on this site but i figured why not....so on with it then!!

well i was going to wait until i had a good amount of parts collected before i started this thread but seeing how i have nothing to do at work since the volumes are so low for some reason, i'm bored and need something to do, so here it goes...(will post pics later)

I had originally wanted to do a k24 build since i was so close to doing it last time, when i had the rsx...but i started reading a bunch of threads on k20a and ephatch and clubep3 that i decided to just keep the build at 2.0 liter instead of the 2.4, something i may regret in the future but whatevs, you live, you learn...

Upon learning that the k20a3 crank is not forged or balanced from factory like most of the crankshafts in the k20 family, i set out to find a crank, unfortunately to my surprise people wanted like $2-300 just for the crank...luckily with the help of craigslist, i found someone semi local that had a k20z3 short block for $150, the kid i bought it from said he thought the piston rings were bad but i could tell when i got there the scarring on the cylinder wall was more then just piston rings, i bought i anyway with hopes of the crankshaft being in good shape...It is in excellent shape after tearing the short block apart...cannot say thing same thing for cylinder 4 however, upon dis-assembly we found the piston in cylinder 4 had a huge hole in it and basically rendered that block useless to me unless i was going to sleeve it.

pic for reference...

k20a2 top

k20a3 bottom




so next thing to find out was how to get rid of shitty 1-lobe vtec and switch to 3-lobe vtec using the a3 head...it was actually pretty simple after conversing with D-Rob of Innovative-Motorworks, he had told me i need to get the k20a2 rocker assembly, luckily someone on k20a was willing to separate the head they were selling and sell me the rocker assembly, so 1 more thing of the list.

so with the new found information, i did some more research and found out the cast of the k20a3 and a2 blocks were nearly the same except for the oil cooler and oil squirters on the a2, which you dont really need the oil squirters if you plan to swap to forged pistons, which i do, lol. I plan to use eagle h beams paired with wiseco pistons in 11.7:1, possibly 12.4:1...still toying with idea of turboing a few years down the line so not sure if i want to stay below 12 or not...

as for the oil cooler conversion, i used k20a.org for most of my information sourcing...this shows you how to use the a2 water pump and oil cooler on an k24 or k20a3 block, without needing to tap a hole in the block for the coolant passage.

http://www.k20a.org/forum/showthread.php?t=81339

The head and 3-lobe vtec, now that i have the a2 rocker assembly, i've decided to do a 3 angle port n polish to the head for a lil better air flow on the a3 head, once completed...i plan to use ferrera valves, supertech dual spring and ti retainer...as for cams, another thing i consulted D-Rob of Innovative-Motorworks, for, i was originally going back and forth between two cam choices, skunk2 pro 2's and prayoonto stage 2's...ive decided on the prayoonto's after speaking with D-Rob.

After speaking to Shaun Quickel of QCP Gear we decided to do some minor changes to the ep3 trans, 5.09 final drive, replacement of 2nd gear n synchros, and an 08 accord 5th gear.


so the parts list:

Block,
k20z3 crankshaft(purchased)
k20a2 oil cooler(purchased)
k20a2 water pump(purchased)
s2000 oil cooler joint(purchased)
k20a2 Eagle h-beam(purchased)
k20a2 Mahle forged powerpak 12.7:1 pistons(purchased)
k20a2 oil pump/baffle/pan/etc...(purchased)

Head,
k20a2 rocker assembly(purchased)
a2 cams(have), temp cam setup
BC stage 2 cams(need)
ARP headstuds(purchased)
Ferrera Valves(purchased)
Supertech dual springs and Ti retainers(purchased)
OEM Headgasket(purchased)
RBC inatke manifold with hondata gasket(need)


Trans,
RSX Type-S transmission(purchased)

Suspension
k-sport or d2 coils(need)
skunk2 gold lca's(need)
ITR rear sway(need)
Ingalls Camber kit(need)
new bushings all around(need)

Wheels & Tires
kind of up in the air right now, don't really know what i want, can't find a wheel design that i am set on right now...few ideas have been
17x8 Fifteen52 Tarmacs
17x8 Rotiform BLQ in Mag blue


245 or 225/40-45/r17
Toyo R888

Misc.
Walboro 400lph(purchased)
Comp Stage 4 Clutch(purchased)
Buddy Club Short Shifter(possibly)
CTR/HFP aero kits pieces.
Window Tint
K-Teller header(purchased)
3.5" IMW-Spec intake(purchased)
K-Teller 3" exhaust piping, magnaflow muffler(purchased)
KPRO(need)


any extra info and criticism is welcome!

thanks for checking out the thread...ill update on regular basis as parts come in...

nahonda04

some pics of what i have gathered...and breakdown of the short block



crank is in great shape:


the partially grenaded piston:



#4 cylinder wall:


k20a2 rocker assembly with cam caps and cam sensors:



k20a2 oil cooler:





did my tax return over the weekend, got a few weeks to wait for it...plan on getting the bulk of what i need to start the parts switch...i.e....pistons/rods, bearings, headstuds, kpro, cams, valvetrain, oil pump stuff...ill just need intake manifold and a header and exhaust and ill be set...




aight, so we pulled the motor out on Tuesday of last week, over the course of the week after work i managed to get the whole motor torn apart, everything will be de-greased and sprayed down by way of pressure washer to try and get as much dirt and grime off the block as i can...next week the head, block,sub-block and z3 crank will be dropped at the machine shop, for re-honing of the block and the crank will get micro polished, possibly knife-edged...the head will just be cleaned since everything is in good condition i don't see a need for the 3-angle valve job...

some pics:























bearing were starting to spin. Glad i let it sit and didnt drive it or this may have been worse..

nahonda04

got everything back from the machine shop, rest of the parts for rebuild will be here within the month...

some pics of the parts back from machine shop:














supertech dual springs and Ti-retainers received with 7 degree keepers, just waiting on valves to show up and then the head can be assembled..





ferrea flat faced valves showed up today...just need some seals and we're ready for head assembly!!

nahonda04

wasn't part of my original build plan but it kind of fell in my lap and I coulebt say no...traded a friend my 5spd trans for his mint type-s trans with 30k on it plus some cash...also just ordered rods/pistons/head gasket and head studs...





so headstuds and head gasket showed up yesterday, just waiting for rods and pistons for the rest of the motor parts...next month will be clutch, header, exhaust, kpro and rbc...then were ready to put it all back together!!




hooray! pistons and rods arrived yesterday!

Eagle h-beams and Mahle 12.7:1 pistons!

nahonda04

ok so this past Saturday i was able to put the head together minus the cams but seals, springs, retainers and valves have all been put on...

some pics to enjoy...

nahonda04

reserved5

nahonda04

reserved6

nahonda04

reserved7

It Wasn't Me

Reported for post whoring.

nahonda04

hahaha ill keep the whoring to a minimum

TommyEp3

Nice! bumppppp

LSV4ME

Nice work!

nahonda04

thanks guys!!





realize i haven't updated this in forever, but i was able to finally order the remaining parts i needed to finish the build, **** is hard to do when you're paying for everything in cash and not credit cards or mommy and daddy funds lol! so i was able to order my header, exhaust, clutch, oil pump conversion, motor mounts, timimng chain tensioner and timing chain!

with that stuff ordered, i went ahead and put the bottom end together for the most part!








Muffler showed up today for the exhaust, 3" magnaflow, going to add a piece of stainless on the end of it so itll turn down

2drh22

Very nice build!

nahonda04

thanks^

and more arrived after i posted, oil pump conversion, clutch kit and type-s flywheel i got last week...

turbohatchBnuts

Nice!

nahonda04

and i worked on this bitch some more!!

(not in time)

nahonda04

all buttoned up and ready for transplant next weekend!! innovative mounts (75A street/track) my buddy, chillin' In da hood...lol

Type-Spaz

Sorry had to move this to the build thread section...

Type-Spaz

love the in da hood shot hahahaha

Bluto!

nice buiild up,BUMP

nahonda04

its cool man... I understand and thanks!
thanks man!

stay tuned for more to come!

Jakester9500

Pretty incredible build so far, I look forward to seeing it finished.

nahonda04

thanks!! i cannot wait either lol..


some fake *** JDM ebay special headlights to replace my old *** oxidized ones...will be paired with hi-lo ddm hid kit

nahonda04

put the headlights in.....



and managed to put the motor in, top entrance transplant, I know not many people use this route because the bottom is so much easier but top entrance can be done!