57david57

Im doing a k24a1 / k20z1 swap on my 05 rsx,(blew my k20z1 setup), down shifted wrong gear.

i bought a k24a1 long block (CR-V) , i wanted a k24a2 block (TSX ENGINE) only for the 200hp vs 160hp (CR-V). now what is the difference between these two engine? (BLOCK ONLY, NOT ALL THE COMPUTER CONTROLLED STUFF) is the only thing higher compression..if i were to buy a set of TSX pistons and throw them on there, would that make it "TSX" engine...also if i can throw some aftermarket high compression pistons on my k24A1 engine how high can i go on pumped gas...12:1 ?? 13:1 ?? and will i hit my valves.. sorry so long..

H22EG'z

im wondering the same thing, and at the same stage as well although i didnt blow anything up , i wanted to know as well if that HP diffrence is such a deficet to begin with that maybe i should hold out for a TSX block over a Crv with higher compression pistons and rings.

57david57

my 05 rsx started out as a base model... i put in the k20z1 set up after blowin the base model (160HP automatic) with NOs (80 dry shot), i switched it over to the K20z1 set up (210 hp).... it was like night and day the power difference. now since i blew up my k20z1 and switchin out to k24a1 bottom and z1 head, im thinking i should have gotten the tsx motor, but then i was thinking if i switch out the k24a1 (cr-v motor) pistons to a higher compression will it be better then a stock k24a2 tsx block... because a crv is (160hp) and tsx (200hp)...if its going to be like my old base model rsx VS type s rsx... (160 to 210hp) the power difference is very very noticeable... so for sure im going to switch out pistons but idk to what...so now im stuck

whiteboii

I believe the k24a2(tsx) block is the only block you can use without doing any mods to it. the problem you have with the other k24 block is that you have to change out the pistons to have enough piston to valve clearance. the tsx motor is 10.5:1 compression stock but putting a k20 head that has smaller combustion chambers you should be around 11.5:1 compression, which is a good set up without having to spend the money and labor on after market pistons..

CMVTEC95

First we need to know what it is you want to achive? Turbo? n2o? N/A? Pump gas Im guessing. What other mods do you have? Cams ecu, ect....

CMVTEC95

For the price of a TSX long block, you can have a A4 machined and built with better internals. TSX is over rated imo. Then again, I have all the machines at my dispense.

57david57

im thinking of just buying a set of TSX pistons and Throwin it into my K24A1(CR-V) engine set up wit the k20z1 head..(((can i just throw in the TSX pistons in the CR-V block??))) im looking for naturally aspired set up..im tired of cops and stuff.. so no turbo..or no greddy set up either(even though it has a CARB #). im thinking of just a RBC manifold, V2 AEM intake, RC 550 injectors, Kpro, exhaust and a lil head porting and gasket matching... and by passing the coolant line in the throttle body area.. so i guess just simple bolt ons.. do u think u can give me any pointers...

H22EG'z

yea, even if i got a TSX block, id prolly still put aftermarket stuff in it.

its hard to find an A1 or A2 block id be happy with just the block and crank.. then i do the rest.

AnointedDC5

Well if you plan you plan to leave it stock internally the k24a2 is the best bet. It has stronger rods, higher comp pistons, a better crank and it has piston squirters which keep the pistons cooler. If you already have a k24a1 you can definitely throw TSX pistons in to gain some more compression (I have a set for sale if interested, lol). The k24a1 block is the only block you do not need to modify your type-s oil pump for whereas the A4 and A2 need the pump to be notched. Also the k24a1/a2 will accept the type-s head with no issues while the k24a4 you will need to swap out the pistons to avoid piston to valve contact. If you have any other questions feel free to ask as I am currently building a k24a2 for my DC5 and a k20/k24a1 long block to sell.

95 Integra gsr

tsx long block is over rated? no no you got that all wrong... the tsx long block is one of the best k24 long block you can get for a turn key swap. the k24a1 block can take on a k20 head also with no mods. the different in the k24a1 short block compare to the tsx block is. rods,piston and oil squirter, friction coated crank and oil pimp. the tsx already come with a dual ivtec head almost the same head as the type s head.

with a k24a1 block you can get 09 tsx piston which would be a direct replacement of the a1 piston. 04-08 tsx piston would also need tsx rod.

57david57

so i just need to order TSX pistons from an '09 car.they will fit on my k24A1 (2003 Honda CR-V)....thanks..i was about to order '06 ones..lol..so now i know to get '09 model...im also wondering about the "FAMOUS" RBC intake manifold..found a new OEM one for like $185..part number 17100-RRB-A00, does this sound right?? i know that i need the adaptor plate and cut off the coolant passage...(SO DO I JUST GET ONE FROM A 2006 HONDA SI??)

when swapping out pistons......to clean the bore you just hit it wit a can of brake spray??? and clean??? then when installin the new pistons do i first put a lite coat of oil on the cylinder walls then slide the piston back in?

95 Integra gsr

with the 09 tsx you don't need to mod the rod for them to fit. with 06 you will need to mod the small end of the rod out 1mm for the bigger piston pin. i would get the block hone. install the piston with Assembly lube on the ring compression tool and on the cylinder walls, the intake manifold you want is the 06-up civic si intake manifold. with an a2 head you will need to cut off the water passage tho.

57david57

ok im clear about the TSX pistons now...thanks u!!!

for the RBC intake i will but putting it on a K20Z1 Head ('05-'06 type s RSX)..
will it be the same as an A2 head?? also needing to cut the water passage and it will fit on there nicely?

95 Integra gsr

i believe all of the rsx type s head are the same. just the newer si's are different... you can easily line up a type s intake manifold gasket on to the manifold and cut the water passage out where the gasket ends

57david57

so im puttin the engine back together..k24 with k20z1 head.. i am having trouble putting the timing chain..im using the k24 timing chain with the k24 chain rails..am i using the right set up..i cant push back the tensioner that much to bolt it in..what am i doin wrong???

shattamac

Post a Pic.. but sounds like your using the right stuff

57david57

THANK U TO EVERYONE WHO HELPED ME OUT....i think i got it now..almost done!!!!! here r some pics.... k24a1 block, TSX pistons with k20z1 head...

flyrod

It looks like you're close. Get it in the car and good luck!

57david57

I NEED UR GUYS HELP!!!!!!
so i put my engine in..i started it up..then i noticed it leakin coolant?? on this k24A1 to K20z1 head setup was there a port up top i 4got to block or what do u guys think it is???



http://www.youtube.com/watch?v=acfoT0-mAJk

http://www.youtube.com/watch?v=4MgsR8Nc_jI

what did i do wrong

dreday423

hey bro sorry to bother but what do you have to do to put a2 pistons and crank in a a1