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Discussion Starter · #1 ·
I own a 1997 Kia Sephia (yeah, yeah, laugh...)

(okay.. that's enough..)

(really now..)

(oh c'mon...)

it has the mazda BP engine in it, and i'm working on turboing it. (okay, laugh some more...)

(okay.)

I'm going to be buying the GTX manifold from corksport, and i was wondering if you guys know of any other matches for the turbo, other than the RH5B VJ-20? i'm looking into using a T3 or T25, since i want to run low boost, but at a fast spooling rate. Do these turbos come close to matching the flange on the manifold?
 

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i'm not laughing...2EGTs has a Kia Sephia i think it was... I don't think a T3 will bolt up to the gtx manifold, but I'm sure with any amount of cash you could make it fit with an adaptor plate and some money.
 

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Discussion Starter · #3 ·
if i have to, i can get the flange that fits, and have it put onto the T3 or 25, whichever i go with, but that'd require me sending the turbo to washington... i live in NY, lol

also, the reason why i'm sticking with my kia, even though it's given me so much shit to fix (body damage from small accidents, no mechanical problems), is because it's such a good handling car.. hell, when it came out, it won the stock class of Pro-SCCA rallycross...
 

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only a vj20 will bolt to it IHI has a different style flange on the vj-series. oh the ever so wanted vj-23 will not bolt to it either for it is much bigger.

NEUMAN
 

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just go with a VJ20, mine makes pos pressure as low as 25mph in 5th gear. Like I'm showing boost when most cars choke themselves and stall. Its a good turbo to match the BPD.
 

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Discussion Starter · #6 ·
alright. i've got a connection for a Mazda 323 performance kit (new turbo, intercooler, etc, etc, no mani, though, gotta get that from Cork) and it has this:

IHI Vf/Vj turbo hybrid. It's a Vj turbine with square mazda flange hybrided with a larger IHI VF compressor (40 mm inducer instead of just 35mm) water and oil cooled, internally wastegated.

i'm gonna use this, unless anyone sees any problems?
 

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Discussion Starter · #8 ·
pretty much, it should bolt up to any VJ manifold, according to the source i'm getting it from, but it's output is better than a VJ turbo, because the compressor side (the side that pumps the air) is for their VH series. spool up time should be the same..
 

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Thats BADASS!!!

haha, its like Garrett did with a T3/T4 by putting the bigger compressor housing mated with the smaller exhaust, so a smaller motor can get more flow and not loose too much with lag....but the Warner-ishi version.

I would love to have that hybrid. Can you get more of them ???? It would make my plans for a turbo upgrade 10X easier. If not I was planning on selling everything on my car as a "kit" minus the fuel, ignition, and exhaust upgrades.

I would love to keep my manifold and get more airflow. I remember reading that the VJ was a 52mm compressor housing and the VF was a 60mm, but I never caught the cfm rates.

My goal is to feed my motor (rebuilt of course) somewhere around 450cfm on a peak @ 25psi on top of a 9.X static compression ratio....although I see how I might make life easier if I just went to a really high 8.X static comp ratio.
 

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Discussion Starter · #10 ·
i'll ask the guy if he has any more of them, i think he might

as far as your setup, that's gonna haul ASS. i suggest looking into Flyin' Miata's forged internals, if you wanna do that. still gotta do sleeves, though, but, hell, it'd be worth it..
 

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hell yeah..............i think a Sephia that halled ass would be cool. i didnt know that they had good handeling either. are you going to leave it looking like stock , like a sleeper ?
ive got a 96 sephia transmission in my 94 protege, thats held up to alot of abuse.
 

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my current dilemma is what to spend my tax return on:

internals for my BP....dont want to spent a grand on rods alone though


bag my truck or get 18s for it


save it cause I know I'm going to need it to live easier the rest of the year


what do ya think? And if I did internals what should I get?
 

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I say forged internals Blade...unless you're going to sell you kit like you mentioned.

I've also seen ARP rod/head bolts recommended over anything else when rebuilding an engine for boost.
 

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Discussion Starter · #14 ·
spooki said:
hell yeah..............i think a Sephia that halled ass would be cool. i didnt know that they had good handeling either. are you going to leave it looking like stock , like a sleeper ?
ive got a 96 sephia transmission in my 94 protege, thats held up to alot of abuse.
actually, after i finish up the engine, i'm gonna prep another body (mine's got some frame damage), dress it up like a rallycar, might do some custom bodywork, and then swap over the engine. i'm even gonna have a friend of mine draw up a rally style paintjob, advertising for my other car club (Streetkiaz.com), and the source for almost ALL kia goods, anymore, Kia-FX.com, and then a few other places.. (BlaastPerformance.com maybe). is that tranny manual or automatic? because i swear, the auto transmission in the 94-97 is absolutely bulletproof. i snapped an axle before, without any damage to the transmission, from neutral dropping it. granted, i will be going to a manual, in the next body, but that's going to have a lightened flywheel, stage 2 clutch, and a few other goodies... if i had the cash, i'd look into making a sequential shifter fit, but i don't have the spare 1500 to drop, lol..

Blade, as far as the internals go, you get what you pay for. if you get the set for 775 off of Flyin' Miata, you won't be disappointed. i have tons of friends who recommend their stuff. plus, it's either that much, for a tried and true product, or more, for custom, that you don't even know if they'll hold up... i'd rather fork out the cash, for it..
 

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i woudn't worry about your internals. stock internals of the BP have been taken to 350bhp. the weak link in the internals are the bolts. i'd replace them with a set from ARP. and that is all you need to do for internals.

or if you want track down a set of B6T rods. found in the USDM 323 GTX.

but just replace the bolt will do wonders.
 

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OniFactor said:
is that tranny manual or automatic? because i swear, the auto transmission in the 94-97 is absolutely bulletproof..
ive got the manual, it gets alot of abuse, and works all the time.(plus theyre cheaper and newer)
 

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Yeah Im thinking this is what I'm going to do:

spend all the money to pay off my credit card. Okay, make my credit look better!

Then use my refreshed credit card to do new pistons that are either slightly higher compression (like 9.5:1 or slightly lower like 8.8:1) either way I'm thinking .040 over. Freshing the motor and gaskets (Felpro kit) and head studs (arp) and just put money into a new head.

Any money left goes to starting my fund on spindles and leaf springs on my truck, so I can put myself on the way to bagging it later in the year.

Yeah, I have to admit I think I could make the escort run 13's on OEM GT crank, rods, and block. The BPD has been an amazing motor to own.
 
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