Rotrex Supercharged K20A ITR swap "EG" stuff
#1
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Thread Starter
Rotrex Supercharged K20A ITR swap "EG" stuff
Something a little different from the norm here.
A 92 CX Hatch build w/ an 05' K20A ITR swap done by the owner. This setup w/ a cold air intake, Hybrid-Racing swap header, a Skunk2 Mega Power RR 76mm header-back exhaust, and KPRO made 231whp and 168wtq, on 93 Octane (Dynojet)
It now has the addition of the C38-61 Rotrex head unit from Kraftwerks installed and all of the fab completed. Still on pump, still the same stock motor/clutch, etc. 1000cc in and a new map sensor were added. 11psi, 361whp, 231wtq (same Dynojet). IMO, that makes for a fun package. A pulley change and E85 is on the way for it.
A 92 CX Hatch build w/ an 05' K20A ITR swap done by the owner. This setup w/ a cold air intake, Hybrid-Racing swap header, a Skunk2 Mega Power RR 76mm header-back exhaust, and KPRO made 231whp and 168wtq, on 93 Octane (Dynojet)
It now has the addition of the C38-61 Rotrex head unit from Kraftwerks installed and all of the fab completed. Still on pump, still the same stock motor/clutch, etc. 1000cc in and a new map sensor were added. 11psi, 361whp, 231wtq (same Dynojet). IMO, that makes for a fun package. A pulley change and E85 is on the way for it.
#6
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Inlet filter location and push radiator fan is interesting.
#7
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Thread Starter
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Thanks, once it is all together it does layout fairly simple. The charger/bracket/lower part of the bay in the front is jam packed.
The fan could actually be a puller at this point, but would be packed super tight. It came in mounted that way; which was a few hour road trip to get here. The original plan was to do a long intake putting the filter out into the driver side fender well. After looking it over, that would have been impossible with the layout of everything else (ducking, dodging, and dipping w/ a 3" pipe). There's a gaping hole right there for air to get to the area the filter sits in without soaking from the radiator (while still being somewhat symmetrical in location)
The fan could actually be a puller at this point, but would be packed super tight. It came in mounted that way; which was a few hour road trip to get here. The original plan was to do a long intake putting the filter out into the driver side fender well. After looking it over, that would have been impossible with the layout of everything else (ducking, dodging, and dipping w/ a 3" pipe). There's a gaping hole right there for air to get to the area the filter sits in without soaking from the radiator (while still being somewhat symmetrical in location)
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#10
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Wow thats quick. The gearing works out very well for that powerband, seems to do a decent job putting the power to the ground.
I would have loved to go the supercharged K route on my build, but there are some extra obstacles/costs I wasn't ready to face.
I would have loved to go the supercharged K route on my build, but there are some extra obstacles/costs I wasn't ready to face.
#11
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Re: Rotrex Supercharged K20A ITR swap "EG" stuff
That thing rips 👍🏼
Cracks me up up when I see people saw they want 600whp when they’ve never even ridden in a 300whp civic lol. Under 400whp in a light civic with traction is a hell of a lot a fun!
Cracks me up up when I see people saw they want 600whp when they’ve never even ridden in a 300whp civic lol. Under 400whp in a light civic with traction is a hell of a lot a fun!
#12
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Thread Starter
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
His combination as a whole does seem to pull and work well together...that makes for a fun street car.
At this point I could probably sit and do a fairly quick heads up pros/cons pound for pound etc. of turbo vs SC on a K swap being that I've done both here (this being the first SC).
#13
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
His combination as a whole does seem to pull and work well together...that makes for a fun street car.
At this point I could probably sit and do a fairly quick heads up pros/cons pound for pound etc. of turbo vs SC on a K swap being that I've done both here (this being the first SC).
The B route for me was just easier to keep amenities like AC and the like, going K or especially K with a supercharger complicates those things a bit. Forum user B18C5(?) in the 5th gen subforum has a super awesome Comtech Supercharged K20 EG with AC and electric PS.
Last edited by Chance EG; 12-06-2017 at 08:02 AM. Reason: words
#15
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Just noticed thats the stock clutch holding that power- that's pretty wild. I guess cuz mild torque and progressive delivery? Greg, do you know what tires are on that Civic?
#16
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Thread Starter
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
I'm curious to see how the powerband of one of the new GTX2860 turbos looks on a 89mm B series. Eventually my car will be the guinea pig for that, going to use one of your RR kits for it
The B route for me was just easier to keep amenities like AC and the like, going K or especially K with a supercharger complicates those things a bit. Forum user B18C5(?) in the 5th gen subforum has a super awesome Comtech Supercharged K20 EG with AC and electric PS.
The B route for me was just easier to keep amenities like AC and the like, going K or especially K with a supercharger complicates those things a bit. Forum user B18C5(?) in the 5th gen subforum has a super awesome Comtech Supercharged K20 EG with AC and electric PS.
I believe R888s. I'm surprised the stock clutch is still surviving.
#17
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
The idea of a B Rotrex build is also very appealing, but once again it inevitably nerfs AC. If the owner of this K20A uses this car for track duty I'm sure it performs amazing
#18
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Thread Starter
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
He does use it for autocross and some drag.
#19
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
#20
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Yep, and so does the JRSC system. I would have loved to explore those further but I have some apprehension about buying systems like that second hand (neither are produced anymore to my knowledge), especially since support for those superchargers are also on their way out, just no more development or sales on that front.
Edit: Oh **** just got off the phone with ATI (Procharger) and they do actually still make and sell those kits... That's incredibly surprising to me.
Edit: Oh **** just got off the phone with ATI (Procharger) and they do actually still make and sell those kits... That's incredibly surprising to me.
#21
Honda-Tech Member
Thread Starter
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Yep, and so does the JRSC system. I would have loved to explore those further but I have some apprehension about buying systems like that second hand (neither are produced anymore to my knowledge), especially since support for those superchargers are also on their way out, just no more development or sales on that front.
Edit: Oh **** just got off the phone with ATI (Procharger) and they do actually still make and sell those kits... That's incredibly surprising to me.
Edit: Oh **** just got off the phone with ATI (Procharger) and they do actually still make and sell those kits... That's incredibly surprising to me.
#22
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
It is still so pricey... the base kit is $5100.00 and there are another $600.00 in options. I wonder how many they sell ???
#23
Honda-Tech Member
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Also impossible to find any good dyno plots of the ATI charger on these cars now thanks to Photobucket taking everything offline. Just not a lot of documentation here.
#24
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iTrader: (3)
Re: Rotrex Supercharged K20A ITR swap "EG" stuff
Well if I knew Rotrex was going to release a newer even more powerful supercharger than the C38-92 I would have gone the supercharged route on my B series motor lol.
This just popped up on my Instagram feed the other day, could only imagine a well setup 600-700hp supercharged B or K series.
Rotrex A/S
This just popped up on my Instagram feed the other day, could only imagine a well setup 600-700hp supercharged B or K series.
Rotrex A/S