18g questions please advise.

[boosted91crx]

Hi guys, after the great success i had asking you guys for help with a o2 housing i decided to once again come to you all for my next question. I am looking to upgrade my big 16 g to a 18 g, i was wondering are all 18gs created equal? and can i get one that does not require water lines as my big 16g has no water lines? what ever 18 g you suggest it must be a direct bolt on replacement for my big 16g i am not willing to change or alter my pipes or plumbing. I was also wondering if they make a 18 g that can actually spool as fast or even faster then a big 16 g while being able to make more power at a lower psi? thanks allot guys, dsmtuners.com is the best site i every found for helping noobs. oh and in case no one recalls me from my o2 housing thread i am running the turbo on a honda crx with a d16z6 motor and am currently at 300whp at 19psi with a stock 2.25 o2 housing, my tuner says its maxed out and wants me to upgrade the turbo and o2 housing so we can safely reach my goals of 350+ whp on 93 octane. please include links to any turbo you might suggest i look into thanks again.

 

[Gstclipse69]

No not all 18gs are equal. Yes you can get an 18g that has no water lines and bolts up exactly like a 16g. I have one. I got it from forced performance. Forced Performance: DSM 18G-6SL2 Turbo
I got an 18g-5h turbo from them but I dont see it listed. However this one looks very similar to it.

 

[boosted91crx]

I also did not see your turbo listed on the site , what is the difference between yours and the one in the link you sent me? also what does clipping do?
i did find this one threw google Modern Automotive Performance  :: DSM  :: Turbochargers and Accessories  :: Forced Performance  :: 18G-5H Turbo

 

[boosted91crx]

bump for a great forum.

 

[boosted91crx]

more bumps any other ideas guys?

 

[JusMX141]

An 18G compressor is only rated at 50cfm more than a Big 16G compressor; I don't think that's enough of an "upgrade" to yeild you 50 more wheel horses.

If you're sticking with the Mitsu turbos because of the quick-spooling TD05H turbine, you may want to look into a TD05H 20G. A 20G compressor is 50cfm more than the 18G, and 100cfm more than a Big 16G. You also have the option of getting turbine clipped to flow more at higher boost levels without adding significant lag.

Remember- just because a turbo's center housing has the ports for water lines doesn't mean they have to be hooked up.

 

[boosted91crx]

thanks

 

[Drubble]

Please note that the the FP 18G-6SL2 turbo does in fact have water lines.

 

[boosted91crx]

so what is the max whp the big 16 g is rated for and what is the max the 18 g is? if its only 50 cfm difference how comes some people say the 18 g supports so much more?

 

[Dr DSM]

do greddy 18g's have water lines?

 

[Metal Health]

I have a greddy 18g, yes it does have water lines.

 

[JusMX141]

Most Greddy 18G's do not have coolant provisions.

 

[Diamond Star Werks]

Real greddy 18g
If your upgrading you should go to a 20g. You will be dissappointed in the power increase of an 18g over the 16g.

 

[Diamond Star Werks]

Flow Rates @ 15psi: TDO4-9B-6CM2 265 CFM TDO5-12A-8CM2 320 CFM TDO4-13G-5CM2 360 CFM TEO4-13C-6CM2 360 CFM TDO4L-13G-6CM2 360 CFM TDO4L-15C-8.5CM2 390 CFM TDO5H-14B-6CM2 405 CFM TDO5H-14G-8CM2 465 CFM TDO5H-16G-7CM2 505 CFM TDO5H-16G-10CM2 505 CFM TDO6-17C-8CM2 550 CFM TDO6H-20G-14CM2 650 CFM TDO7S-25G-17CM2 850 CFM TFO8L-30V-18CM2 1200 CFM

Max Output: TD05-14B (stock 1st gen) 275-300hp @ 21 psi TD05-16G (small) 345-365hp @ 22 psi TD06-16G (large) 365-385hp @ 22 psi TD06-20G 430-450hp @ 22 psi T25 (stock 2nd gen) 235-250hp @ ?? psi T3 (super 60)/T2.5 hybrid 265-280hp @ ?? psi T3 (super 60)/T2.8 hybrid 270-320hp @ ?? psi

Evolution 1 Turbo = TDO5H–16G-7 Nozzle Area (cm2) = 7 Exhaust turbine = Inconel (steel alloy) Compressor = Aluminium, 60mm wide

Evolution 2 Turbo = TDO5H–16G-7 Nozzle Area (cm2) = 7 Turbine = Inconel (steel alloy) Compressor = Aluminium, 60mm wide

Evolution 3 Turbo = TD05H–16G6-7 Nozzle Area (cm2) = 7 Turbine = Inconel (steel alloy) Compressor = Aluminium, 68mm wide

 

[boosteddsm98]

obviously there a ton of flow rate charts and they are all within reason, but i will say that my MHI 18g does have coolant lines and pulls a hell of alot harder than my 16g ever did. Also my spool up time is great i am about 12psi at 3200rpm. I only ran 16psi with my ebay big 16g, and now on the 18g we are up to 20psi. just like (Gstclipse69) said not all 18gs are equal, some are similar to the 16g and use a j pipe and others dont like mine. As others said, if you dont want to change much other than the turbo then you may want to go with the bastard 20g, which i believe slowboy racing sells. correct me if im wrong