Well I am persuing the KA-T route for this car instead of swapping like before. However this is my "nice" car...
Anyway Im not looking for lots of power, maybe 200whp... I just want reliability, a bit more power and VERY little lag. I have dealt with TONS of turbo settups on many different cars and have decided on the following for ease of parts availability...
SR T25manifold (unsure of what to do)SR 370'sAFC-2smic (or small fmic if I can find one)custom piping and DP
I am looking to push maybe 7-8psi (right about what the stock internal gate pushes) w/91 octane. I am confident that with my 2.5-3" exhaust I cant put down at leist 220trq to the wheels and 200hp to the wheels as well. I wont be going over this point as I dont want the power nor having to upgrade to large IC, ignition or ECU tuning at all....
I am very open to any suggestions as for the manifold/DP and IC settup. THis is all for my 140k 95' KADE running 91 always thats got great compression (180+). So if anyone has tips as to reliabilty/performace for something like this lemme know. Im not sure what I should even set the timing at for this (Ill also be using colder plugs). Thanks!
Hows this sound for modest?
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Structure240sx
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this is a kind of setup i want now, fast spool. if i was to do this as my next project i would copy aceinhole's setup. t25 with ssautochrome sr manifold reflanged for the ka. if you position it right you can use the sr downpipe and fmic. with a t25 on a ka i would definitly get a fmic since the turbo will be making so much heat.
what is his settup?
So he used a SSautochrome manifold, where did he get the KA flange to weld on it? How do you reposition anything if you are just using the flange? Is there any other info anyone has?
THis is pretty interesting cause I just figured I can get these parts for so cheap since I have friends with SR's and it would have one heck of a power curve.
The turbo wont be making mroe heat than an SR running 8psi so Im not sure how advantageous a FMIC would really be.
PS- thanks for the IACV valve!!!
So he used a SSautochrome manifold, where did he get the KA flange to weld on it? How do you reposition anything if you are just using the flange? Is there any other info anyone has?
THis is pretty interesting cause I just figured I can get these parts for so cheap since I have friends with SR's and it would have one heck of a power curve.
The turbo wont be making mroe heat than an SR running 8psi so Im not sure how advantageous a FMIC would really be.
PS- thanks for the IACV valve!!!
I would say at least a small FMIC from eBay would be smart. The KA has 20% more displacement than the SR, so 8psi on the KA is like running closer to 10psi on the SR. Not exactly the same since the pressure ratio is the same, but the efficiency will most definitely be hurting towards redline.
You can pick up pretty reasonably sized intercoolers for around $200 on eBay, which won't be all that more expensive than an SR SMIC.
Should be a fun setup for street driving though.
You can pick up pretty reasonably sized intercoolers for around $200 on eBay, which won't be all that more expensive than an SR SMIC.
Should be a fun setup for street driving though.
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Structure240sx
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Quote »The KA has 20% more displacement than the SR, so 8psi on the KA is like running closer to 10psi on the SR.[/quote]
Well actually there is less heat displaced in the KA since it is infact ~20% larger (more area in CC). As for power-yes- the KA at 8lbs could be compared to an SR at 10lbs...I mean maybe since the KA spools the T25 a bit faster that that heat will be there, but thats not my poiny
The whole topened thing isnt a huge deal. Im sure it will do ok till at leist 5500 or so and thats fine for me. auto-x, road course, drift is the stuff that is in its future...
I mean ideally I'd like to go FMIC, but I dont want to spend more than about $400 for an intercooler settup. I wouldnt be going with a stock SR sidemount. I am thinking starquest fmic, MKIV smic or maybe even a cheap ebay core as you suggested...
Wheres the link structure
Well actually there is less heat displaced in the KA since it is infact ~20% larger (more area in CC). As for power-yes- the KA at 8lbs could be compared to an SR at 10lbs...I mean maybe since the KA spools the T25 a bit faster that that heat will be there, but thats not my poiny
The whole topened thing isnt a huge deal. Im sure it will do ok till at leist 5500 or so and thats fine for me. auto-x, road course, drift is the stuff that is in its future...I mean ideally I'd like to go FMIC, but I dont want to spend more than about $400 for an intercooler settup. I wouldnt be going with a stock SR sidemount. I am thinking starquest fmic, MKIV smic or maybe even a cheap ebay core as you suggested...
Wheres the link structure
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Structure240sx
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candela wrote:Well actually there is less heat displaced in the KA since it is infact ~20% larger (more area in CC). As for power-yes- the KA at 8lbs could be compared to an SR at 10lbs...I mean maybe since the KA spools the T25 a bit faster that that heat will be there, but thats not my poiny
I mean ideally I'd like to go FMIC, but I dont want to spend more than about $400 for an intercooler settup. I wouldnt be going with a stock SR sidemount. I am thinking starquest fmic, MKIV smic or maybe even a cheap ebay core as you suggested...
The only things that matter for turbo efficiency are the pressure ratio and flowrate the turbo must put out at that pressure ratio. Look at a compressor map, then imagine how a bigger engine would move the turbo to the right on the graph, since it has to put out more flowrate at the same pressure ratio. I can guarantee that approaching 10psi, the T25 isn't going to have the best efficiency on a 2.4L engine. It will do it, but will probably be spitting out a decent amount of heat.
I'd go with a cheap EBay FMIC if it were me. Shouldn't cost more than about $300-350 all said and done for the core and piping and even paying someone to weld some of the pipes.
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C-Kwik
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Actually, you can't compare tham at different pressure ratios. You must look at them at the correct pressure ratio as it can put you in an area of the map that would change the efficiency quite a bit. For a given RPM and assuming the same VE, a larger displacement vehicle will move more air which would shift the curve to the right on the compressor map. However, in this case, you also have to account for RPM. The SR revs higher from the factory and will make up for a lack of displacement there.
C-Kwik wrote:Actually, you can't compare tham at different pressure ratios. You must look at them at the correct pressure ratio as it can put you in an area of the map that would change the efficiency quite a bit. For a given RPM and assuming the same VE, a larger displacement vehicle will move more air which would shift the curve to the right on the compressor map. However, in this case, you also have to account for RPM. The SR revs higher from the factory and will make up for a lack of displacement there.
I'm not sure if this post was aimed at mine, but I think we're saying the same thing.
The SR does have a few more revs, but the KA has 20% more displacement on the SR, while the SR only has ~7% more revs. The VE of the KA will likely be a tad lower, but that's not going to make up that large of a difference.
The T25 will work just dandy, I just wouldn't skimp on cooling since I'd bet it will be fairly inefficient in this application(which doesn't mean it won't make good power, just that it makes alot of heat in the process).
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Structure240sx
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