Turbo

[Mazda_Performance]

Hi i got a question.
i saw on this site the astina 1.8 turbo.
and now was my question: witch brand turbo did you use and..........
i want to know how you did it because......... damn i'm jealous.

thank you very much.
Rin Perdaems
Bad Boy Tuning Team
the Netherlands

[KaiNe]

they are not for sale in NL , only in other country's

[Toyboy]

The Turbo Astinas on this site have the JAP-SPEC Familiar GTX 1.8Turbo engines in them :wink:
They never made a factory turbo BA Astina/323F,all these guys have transplanted this engine into there cars :D

Catch ya :wink:

[Mazda_Performance]

is there a internet site where i can find those engines with prices?
and what do you have to replace in the cockpit ect.?

[TURBO MAZDA]

Depending where you get the motor from and what you get with it, gearbox, computer etc , they go from $950 - $1250 for just the motor with out the gearbox and may come with the computer if your lucky.
the only thing different between the gtx bp motor an a non-turbo bp motor is the Intake manifold and the exaust manifold for the turbo.

[pr1mo]

most of the guys go for the full engine transplant as they say its cheaper. but how much would it actually cost to convert a standard BP to turbo without doing a complete swap??!?!?!

cheers mike

[JynX]

A custom exhaust manifold would cost probably the price of the engine so you could try and get a GTX one but then youd have to use the smaller turbo, custom you can use any turbo u want i guess.

[Rupewrecht]

most of the guys go for the full engine transplant as they say its cheaper. but how much would it actually cost to convert a standard BP to turbo without doing a complete swap??!?!?!

cheers mike

well, you *could* just bolt a turbo to the NA engine, but it's not designed to have one. The compression ratio is higher than the BPT, which means you wont be able to run more than say 6psi, as you'll start getting some serious pinging etc. You could do a dodgy by using a thicker head gasket, but in the end it's not going to be as reliable as just bolting in a BPT

[mrpayner]

well, you *could* just bolt a turbo to the NA engine, but it's not designed to have one. The compression ratio is higher than the BPT, which means you wont be able to run more than say 6psi

6psi is quite a modest power increase though..... How much of a gain could you expect from a bolt-on turbo such as this??? [don't worry, i'm not thinking of doing it!! 8) ]

Adam

[pr1mo]

at 6psi i assume all the gearbox related problems the GTR/X guys are having would be nowhere near as severe?

cheers mike

[Rupewrecht]

how much power? not sure , but probably about 115kw at the fly. but thats a guess - all depends on what turbo and too many other factors!

and mike, yeah, probably, as it's torque that breaks casings so i'm told. but treat your box badly and you'll break it - you can still break them while NA - look at KH TX3 ;)

[BigMal]

Just for the direct comparison of adding a turbo to a N/A when I got
prices for my conversion (Which was over 4 years now) the price of
a turbo and manifold was $600 and a complete motor was $875. Take
from that the fact I sold my 53K N/A motor for $500 and you can see
why we say going the GTX motor is a cheaper option. The GTX motor
has bigger rods, 8.2 Compression, higher output alternator, bigger
injectors etc etc all needed for running boost.

If you want to try I will eventually have a turbo, manifold and 380cc
injectors for you to buy.

Regards

Mal

[pr1mo]

who me? turbo? :oops:

ehehehe no more major mods for a year! thats what ive decided will hafta see how my theory plays out :P


cheers mike

[Asterix]

I am guessing you also need an engineers for the transplant?
Is it a staright swap on the same mounts, or is there extra to do too?
How would you go putting the Familia donk into a BJ hatch?

[pr1mo]

hmmmmmmmm good question! a BPT powered SP20 :) i like that idea


cheers mike

[Rupewrecht]

well, no, to drop a BPT into a SP20 would be a step back, as you're losing displacement. buuuuuuuut as *apparently* the SP20 engine is just a stroked BP, you could possibly use the SP20 crank inside a BPT :)

but dropping a BPT would technically be illegal, as the engine is older than the car (which is the illegality).

[kyra]

it's true Dan..not apparent... look at the engine specs... just bored out to give it more cubes.
an ugly conversion to such a great car!!! just dump a t28 bb to the sp20, and the rest of the ancilliaries...off you go son.

[Bear]

it's true Dan..not apparent... look at the engine specs... just bored out to give it more cubes.
an ugly conversion to such a great car!!! just dump a t28 bb to the sp20, and the rest of the ancilliaries...off you go son.

nice idea ... you could find a less than healthy BPT where the turbo is still good ... strip off and transplant the externals ... the only issues would probably be compression and ecu

[BigMal]

Kyra, The SP20 is stroked not bored which is why it is of interest to BP
guys to increase displacement to their BPT's. Have heard it speculated
often that they are the same but the SP20 is said to be a "F" Series not
a "B" Series motor so not sure.

Bear, Not sure if the manifold will bolt to the SP20 head. Best way to
answer this would be to ask Pacemaker who are making the extractors
for the SP20 if the manifold is the same bolt pattern as the BP. If it
is then you can use the BPT turbo and manifold otherwise you need
a custom setup.

Regards

Mal