Si2001's Mera
- Thread starter si2001
- Start date
I've seen novels shorter than that mods list.......thats gonna be one heck of a mota....
P
P2 GTI
Guest
So whats the BHP/torque figures
Estimates are high 200's off nitrous...and depedning on how much nitrous I can run before detonation kicks in, depending on fuel type...you'll be talking in the region of 400 - 450 hp...with similar torque.
But these are just estimates going by similar specs. found on cars in the U.S.
IT WILL RUN 11's, I guarentee it.
Cheers
Dave
But these are just estimates going by similar specs. found on cars in the U.S.
IT WILL RUN 11's, I guarentee it.
Cheers
Dave
V
VZR_Dave
Guest
lol i bet a 182 will be quicker. I love seeing set up's like these. NA all the way but SI has done a bloody good job just a shame he cant push much more boost through the bottom end. Get it rebuilt.
M
Mark_Gti
Guest
Si2001
Your car has everthing! The looks and the power. Good work mate
If you dont mind me asking, how much did it cost to have it turbo'd? im thinking of doing it in the future!
Your car has everthing! The looks and the power. Good work mate
If you dont mind me asking, how much did it cost to have it turbo'd? im thinking of doing it in the future!
Awesome spec dave. Dont think there is much left of the original car 
Mark_gti....thanks for the comments mate. still a lot i wish i could do to the exteriour when i've got a bit more dosh. If you want to do the conversion, well it's cost me 4.5k so far including all the parts and labour. Doing a DET swap would probably be a lot cheaper to be honost and would be less headaches involved but you make your decisions at the time and have to stick with em once you go so far.
Mark_gti....thanks for the comments mate. still a lot i wish i could do to the exteriour when i've got a bit more dosh. If you want to do the conversion, well it's cost me 4.5k so far including all the parts and labour. Doing a DET swap would probably be a lot cheaper to be honost and would be less headaches involved but you make your decisions at the time and have to stick with em once you go so far.
Cheers guys...to be honest, the only problem we have in turbocharging the SR20 is our high compression. Unfortuantely, we have a higher 10:1 compression, which allows us only to run in the 5-8lbs region depending on fuel rating. Unlike the guys across the water, who got 9.5:1 (like the SRi spec. Primera). With this compression, you can run a lot more boost...i.e. 1 BAR (15 lbs. approx).
If you can get a set of forged low comp. pistons & stronger rods (even DET rods w/ ARP rod bolts), you can go mad with the boost...and will be restricted by other factors... i.e. turbo, cams, cylinder head flow, way before the bottom end goes pop. With forged pistons & stronger rods, you are pretty much safe to around the 800 HP mark...the block is that strong...however, you will have both transmission problems and traction problems way before that.
Si, with the T28 you are using, you will not make anymore than around 330 HP...unfortunately that is all that the T28 can flow. However, if you decide to spray on top of that, which is more than safe with the correct setup...400 HP is achievable with relative ease.
A guy on the SR20 forum is making 424 WHP (around 500 crank HP) with a T3/T04E & a 50 shot of nitrous!
It's just a case of how far do you want to go!
If anyone needs any advise...just ask!
Cheers
Dave
If you can get a set of forged low comp. pistons & stronger rods (even DET rods w/ ARP rod bolts), you can go mad with the boost...and will be restricted by other factors... i.e. turbo, cams, cylinder head flow, way before the bottom end goes pop. With forged pistons & stronger rods, you are pretty much safe to around the 800 HP mark...the block is that strong...however, you will have both transmission problems and traction problems way before that.
Si, with the T28 you are using, you will not make anymore than around 330 HP...unfortunately that is all that the T28 can flow. However, if you decide to spray on top of that, which is more than safe with the correct setup...400 HP is achievable with relative ease.
A guy on the SR20 forum is making 424 WHP (around 500 crank HP) with a T3/T04E & a 50 shot of nitrous!
It's just a case of how far do you want to go!
If anyone needs any advise...just ask!
Cheers
Dave
why cant he run more boost thru bottom end thought they had a strong bottom end?
im not very clever with engines really lol. just i thought off wot ppl said bottom end was strong? was just askin. so r u gettin diffrent pistons etc?
R
redSRi
Guest
kia_tat said:
I'm guessing Dave is on about the SR20De spec SRi in the primera if thats what you meant, otherwise yeah with it's lower compression means it can handle higher boost pressure as standard.
Consett, yep as posted above I'll be getting forged pistons at some point. Possibly a thinner HKS head gasket first which will lower the compression slightly.
The SR20DE bottom end is very strong...probably one of the strongest 4 cyl. 16 valve engines ever made.
However, the pistons are not forged unlike the crank & rods that are...so giving the stock pistons too much boost or gas is first likely to break either a piston ring or the top ring land.
Once the problem with the pistons is out of the way, then the rod bolts become the next problem. Depending on your luck, they can last way into the 400 hp mark, however, there have been some unlucky people who have had broken rod bolts, and thus bottom end failure...i.e. kablamo!!!
As for the SRi spec. SR20...yes, it will accept the turbo conversion much better, because it has a slightly lower compression ratio, thus accepts more boost. It has a slight dish in the piston crown, unlike the GT and GTi pistons which are flat tops (excellent for nitrous)!
The GTiR and 200sx motors use the exact same pistons, but in the GTiR, there is a different combustion chamber design, thus the lower compression.
It really comes down to luck...only rough ideas of how much boost or how much spray the SR20 can take can be given.
Next question!
Cheers
Dave
However, the pistons are not forged unlike the crank & rods that are...so giving the stock pistons too much boost or gas is first likely to break either a piston ring or the top ring land.
Once the problem with the pistons is out of the way, then the rod bolts become the next problem. Depending on your luck, they can last way into the 400 hp mark, however, there have been some unlucky people who have had broken rod bolts, and thus bottom end failure...i.e. kablamo!!!
As for the SRi spec. SR20...yes, it will accept the turbo conversion much better, because it has a slightly lower compression ratio, thus accepts more boost. It has a slight dish in the piston crown, unlike the GT and GTi pistons which are flat tops (excellent for nitrous)!
The GTiR and 200sx motors use the exact same pistons, but in the GTiR, there is a different combustion chamber design, thus the lower compression.
It really comes down to luck...only rough ideas of how much boost or how much spray the SR20 can take can be given.
Next question!
Cheers
Dave
consett_GTi said:
Really the problem is detonation...he could back the ignition timing off which would help, but he probably wouldn't gain that much more power with running more boost due to the timing.
I had this problem with the nitrous!
He could however run a higher octane fuel...and I am not talking about OPTIMAX or ULTIMATE...I'm talking about racing fuels like VP or BLUE 76!
But that costs too much!
Just get pistons and a set of rods while you are at it and you'll be fine!
Cheers
Dave