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Gen 1 k-swap

647 views 13 replies 3 participants last post by  CSPCRX  
#1 ·
I've got an 85 si that the original engine with its early efi has 250,000 some odd miles on it and is getting tired. It's developed an oil leak in the main seal as well as the seal at the distributor and head/block. It's getting increasingly hard to find parts for this engine and have decided that rather than continuing to spending money on unobtanium that it is supposed to be relatively straght forward to put a new k-series engine in it. Not only is it not 40 years old but there are several models over more than a decade that have the k-series engine making it far easier to get parts as well as a huge aftermarket that supports this engine. Through general research I've learned there are several versions and setups of the k-series and have come to the conclusion that what I should go for and have my eyes on is a k24a rbb dohc iv-tech out of an 03-14 Acura tsx with a 6 speed manual transmission. I wouldn't go so far as to clam to be a mechanic but I'm no stranger to tools and have done most all the work on all of my cars as well as many of my friends cars. But I've never done a whole engine swap before and especially not by myself. I suppose my question would be does anyone have any advice or things to pay particular attention to for me to do this correctly? I'm I correct in the type engine to get and go ahead and pull the trigger and get it? What all am I going to have to get to pull this off? And is there anyone that may be willing to assist or guidance to help me avoid unnecessary mistakes or over spending here in CO I'm actually in Longmont/Boulder area?
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#3 ·
Thanks for your input but the whole point in doing this is to have parts readily available easy to find fairly cheap and for as long as possible and the d-series is 30 years old and how many places keep d-series on the shelf and for how much longer will they ? Is the k-series not the newest & most available engine that comes in more cars and for a longer run? Thus come 15 years from now more likely to still be able to find parts a lot easier than the d?
 
#6 ·
K swapping my 86 SI was over $8500 but I added things that drove the price up like LSD for the trans. If you can score the engine and transmission from a pull a part place when they are doing a sale it will help keep the price down. $5k is going to be tough.

here is a parts list for my swap when Brian and I did the swap.

 
#7 ·
Thank you for the response and your parts list but I have a few questions on the necessities. You did say you got some higher end and extra parts. If you could find the time is there any way you could compile a list of what the bare minimum or I guess the can't function without list for me? I would be extremely greatful and if that's something I would need to compensate you for I realize time is money, what would you be asking to do such a thing for me? If I can get the engine trans and ecu for $3k am I not going to be able to use the accessory set up basically as is get a cheap clutch setup and use the ecu that it comes with ? I figured I would try to find a matching cluster and basically gut the wiring harness thats in my car and pretty much retrofit the the needed electric components the ecu has to have out of the same type care the engine came out of. I know I will need shifter and cables, axles engine mounts... radiator and tubing fuel pump, regulator.. clutch setup...am i able to use my steering, spindles, and suspension and all that?
 
#10 ·
Okay try and narrow the list down for you.

2003-2005 Accord throttle body
Honda Element throttle cable
Acura RDX thermostat housing
K-Tuned idler pulley and accessory belt
2001-2005 Civic intake air temp sensor
RSX manual intermediate shaft
2004 Acura RSX PND base model ECU modified with Hondata K-Pro (you have to decide what your plans are for tuning and ability to disable functions to make swap more compatbile)
2003-5 Accord manual engine wire harness converted for use with Hondata K-Pro ECU 2003-5 Accord ECU sub harness (you can use other harnesses but this is an option)
K-God’s Garage adapter harness modified to work with Accord ECU sub harness
Hasport Performance AFK2 mount kit
Hasport Performance AFKAX drive axles
Hybrid Racing RSX shift cables (can use OEM cables)
Hybrid Racing A2 K-Series No cut shifter for RSX transmission (easy way but you can try and DIY)
Toyota Dorman CM39681 Clutch Master Cylinder
Honda Civic clutch reservoir
Hasport Performance AF clutch master cylinder bracket (alternative to this and two items above is to buy a kit from Hush Performance)
K-Tuned K-series clutch slave cylinder (can use OEM if it’s in good condition)
Custom hydraulic clutch lines ( if you get Hush kit it’s included)
1st gen Scirocco aluminum race radiator
custom radiator mounts
generic no name pusher cooling fan
Honda 37760-P00-003 Thermo (A-93) (Nippon Thermostat) Switch
Dorman Upper radiator hose assembled from other hose parts and 1.25” coupler Dorman lower radiator hose
K-Tuned upper coolant housing with filler neck
Walbro in-line 255 fuel pump
K-Motor Performance hardline fuel fitting adapter -6an – M14 for CRX FueLab in-line 10 micron Fuel filter with -6an inlet and -8an outlet K-Tuner Fuel pressure regulator (obviously other options exist)
-6an fuel lines and fittings
BMW 13311722565 fuel return line
K-Tuned K-swap header (or use stock)
Vibrant 3” I.D. 30° bend aluminum pipe for intake air filter
Autobahn88 45° silicone elbow reducer coupler 3” to 2.75”
Trubendz 3” Stainless Mandrel bent kit for 88-91 CRX or have local shop make it.
3” MagnaFlow 4in x 9in Oval Center/Offset Performance Muffler 12219 (Rear) 3” Flowmaster 71419 FlowFX Muffler (middle section) you decide what you want obviously
3” Flowmaster 200 cell cat 2000130
RSX 02 sensor Denso 234-9005
Blox velocity stack and 6” filter (you can obviously pick something)
Acura Integra hubs
 
#11 ·
Thank you very much doing it that way for me really does help me. I apologize the way my brain processes things is usually quite a but deffrent than most and sometimes I need things spelled out to understand it Thank you very much for taking the time to help me to better understand what all is needed I'm extremely greatful for the information and your patience.