which is better for a 88 Si CRX homemade Turbo?

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Old May 15, 2003 | 09:19 AM
  #1  
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Default which is better for a 88 Si CRX homemade Turbo?

1)Turbonetics T3/T04E
2)Mitsubishi tdo5

Huge price difference, but I am mostly concerned with life of the motor with either one on and which one is the most common to use.

Any comments or help is appreciated.

<-- clueless when it comes to turbos


Thanks
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Old May 15, 2003 | 09:22 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Renegade)

The Mitsubishi 14b off the 1st gen DSM is IMIO a great fit. I'd almost prefer the later T-25. The 14b should be able to make nearly 275 hp well out of reach of a stock A6. It will also spool up pretty quick leaving you a fat power band. I assume that the T3/T4 hybrid would be a pretty laggy turbo with such a small engine.
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Old May 15, 2003 | 09:31 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (spankenstein)

hahaha, since this is so over my head here is what I understood.

I understand the 14b is the turbo model, what is DSM? would the 14b kill the engine faster? I plan to do a mini-me swap also.

Thanks
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Old May 15, 2003 | 09:41 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Renegade)

14 b is a 1st gen eclipse turbo
t25 is a 2nd gen eclipse turbo
t3/t4 is a regular turbo

the 14 makes more power but doesnt spool as quick
the t25 spools up really fast
and the t3/t4 is meant for a built motor a b16a so i wouldnt waste my time

get the t25
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Old May 15, 2003 | 10:04 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (slowpokesi)

thanks for the short course....
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Old May 15, 2003 | 10:05 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (slowpokesi)

DSM= Diamond Star Motors, for 90-99 eclipses. it was a join between Diamler Chrysler and Mitsubishi that ended in 00'. that's why the new eclipses are so damn ugly and non-turbo because Mitsu had to do it on their own.
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Old May 15, 2003 | 10:42 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (white99gsr)

i was under the impression that DSM ended in 94. and they then split. chrysler makes the non turbo engines 420a's same as a neon and mitsubishi makes the turbo engines 4g63...in either case the 14b will provide quicker spool up time and probably(i use this word very loosly) less beating on the engine.
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Old May 15, 2003 | 11:36 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (kyle h.)

probably not,
the 14b is more powerful than the t25 2nd gen
the t25 is smaller so its spools faster

the 14b is bigger so it spools slower but makes more power.
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Old May 15, 2003 | 11:43 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (slowpokesi)

I would recommend the 14b personally...spooling wont be THAT much slpwer and the power gains will be more..I have one of these with 15k for sale and I have an IHI RHB5 turbo for sale as well...PM me if you're interested
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Old May 15, 2003 | 02:19 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (amber-bling)

what kind of gains can I get with the 14b and or with the T25?
I am not making a drag car, just want more power on the street. Later start to autocross it. With that I am thinking T25 because i get power sooner than with the 14b. and the T25 would not be as rough on the motor. Of course they will all increase the wear but it may hold up better.

thank for all the replies.

Sorry I got the 14b and T25 mixed up. I changed it in the post...unless I am still confused
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Old May 15, 2003 | 02:35 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Renegade)

t25 would most likely be better used in autocross. but generally super fast cars arnt needed for autocross.
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Old May 15, 2003 | 04:11 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (kyle h.)

The 14b shouldn't really spool up any slower than it does on the Eclipse/Talon. I'm doing a 14b on a ZC and fully expect the additional compression to make up for the lower displacement.
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Old May 15, 2003 | 07:56 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (spankenstein)

On single cam motors I would suggest a t28/t3 hybrid.
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Old May 15, 2003 | 08:23 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (blastcrx)

i have heard that a turbo isnt as good on a motor w'vtec as not having vtec. the sohc motors are good for turbos b'c well,...no vtec. someone correct me if im wrong or if i am right... explain it better.
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Old May 16, 2003 | 05:59 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (CRXSi_AutoX)

turbo works just as good on a motor with vtec as a motor that doesnt have vtec.

do some research
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Old May 16, 2003 | 07:05 AM
  #16  
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Default Re: which is better for a 88 Si CRX homemade Turbo? (slowpokesi)

Kyle - I agree, but it would make it more fun on the street and freeways. Not that I drive like a maniac just like the feeling of power when you want it. Either way if I have to run SM2 then I should just take advantage of it...
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Old May 16, 2003 | 07:21 AM
  #17  
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Default Re: which is better for a 88 Si CRX homemade Turbo? (slowpokesi)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowpokesi &raquo;</TD></TR><TR><TD CLASS="quote">turbo works just as good on a motor with vtec as a motor that doesnt have vtec.

do some research</TD></TR></TABLE>

dude, chill out aight. did you not read my post clearly, or are you dumb?
i said that if i am wrong, someone correct me. not if i am wrong, be rude about it.
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Old May 16, 2003 | 07:42 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Renegade)

Since the turbo manifold flanges are completely different, and there is more aftermarket support for Garrett, I'd go T3/t04E, but they are right about the lag. You might want to just grab a .42/.48 Garrett T3 off a Saab for $100(that's what mine cost). They are very quick-spooling. See how it works, then upgrade later. Are you going to be using a HF/STD manifold, or something like a Greddy that allows you to keep A/C?
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Old May 16, 2003 | 07:56 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (nuc79)

that's new, I did not know that I could not keep my A/C with the HF manifold. Which it is the way I was thinking of going...
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Old May 16, 2003 | 08:03 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Renegade)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Renegade &raquo;</TD></TR><TR><TD CLASS="quote">that's new, I did not know that I could not keep my A/C with the HF manifold. Which it is the way I was thinking of going...</TD></TR></TABLE>

AC is for wussies anyway.
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Old May 16, 2003 | 06:27 PM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (Lord Quaalard)

first of all what year and model saab can i get this turbo from and can the hf manifold be used for any of these 14b, t25 and saab turbo applications. also how much would these turbos run for 14b and t25.
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Old May 17, 2003 | 10:41 AM
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Default Re: which is better for a 88 Si CRX homemade Turbo? (zccrx)

sorry for teh delay...free bump...you have mail with pics
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