GTX Rallycar of wtf

[shizzl]

So I kind of went too full on with the throwbacks this year.

not only acquiring a set of recaro fishnets and a stainless dumpy for the rotor conversion.

 

I seemed to have impulse purchased myself a 89 bg8 Mazda gtx hatch, but in Rallycar steez.

 

the body is immaculate condition, with a very well built cage, terratrip and terraphone already set up.

3 sets of rims and tyres and 2 spare motors and a host of other bits.

 

score right????

 

well the car was sold with some “ lifter noise”.

ok sure, that’s fine.

I decided to pull the spare motors apart.

motor 1 “run bottom end”… missing all lifters, hmmm. Head off for a look. Oh boy, pistons are umm smoked, ring lands are awol.

bottom end however is mint. Block could be saved with a light hone, head has some heavy combustion chamber damage. To the parts shelf it goes.

 

motor 2 “rebuilt motor but has lifter noise”….

missing lifters also, Dafuq.

head off, wow looks like shit has gone through the motor aswell. Bottom end also mint. Could actually use these bearings aswell. 
 

motor 3 “ in the car, runs but lifter noise”.

hla’s have lots of play. Pulled the sump to inspect. Bottom end is tight and super clean. No crap in the pan bar a small amount of sludge build up.

turbo exhaust side has a fair amount of oil residue in there.

 

I will replace all lifters in this motor and test it out. It starts so good, does die out because some numpty has cut the intake pipe too short to fit the restrictor, and isn’t sealing. False afm reading I guess.

 

car has new discs and pads fitted.

savage gauges, yup they’ll go straight to the bin.

new alloy radiator too, full width dealio.

new Silverster Hans spec belts and some sick stickers bro. Love the fit of the Racetech seats too.

 

 

plans:

sort the lifters etc, get it running like a boss.

gain by msnz license finally and get an authority card. 
hopefully find a spare gearbox for it.

go full send on some club stuff.

 

[shizzl]

Have ordered up a set of replacement HLAs (hydraulic lash adjusters) for this.

coming from Aussie. NZ has nothing, no parts departments know what the hell they are.

 

also have a GTR head to pick up locally.

[nobody]

13 hours ago, shizzl said:

also have a GTR head to pick up locally.

Awesome little car!

GTR and GTX heads\cams are the same apart from GTRs have sodium fllled exhuast valves

[GARDRB]

5 hours ago, nobody said:

GTR and GTX heads\cams are the same apart from GTRs have sodium fllled exhuast valves

Salty

[nobody]

26 minutes ago, GARDRB said:

Salty

?? Just passing on information, lots of people try to pass off GTR heads as a performance upgrade when in reality they are the same

[tortron]

As in sodium chloride

 

NaCl

[nobody]

Well that went over my head didnt it 

[GARDRB]

1 minute ago, nobody said:

Well that went over my head didnt it 

Haha, sorry, probably over the top shitpost on my behalf

 

[shizzl]

Haha all this talk of salty and over head.

picked up said salty head today.

started pulling the head off the existing engine.

decided I want to inspect the pistons in this one too.

plus tidy a few other things up, put a fresh HG on it with the salty head.

check the turbo out etc

[shizzl]

We’ll bugger. Engine number 3 needs pistons too.

something has entered this one too.

I’ve looked at the spooly stu stu stuuuu maker and it’s fine. Although loads of oil in the exhaust side.

found a piece of metal sitting on number 2 piston. 
 

anyone got any leads on replacement pistons?

[shizzl]

Might be time for forged pistons.

can get a set of CP pistons for $1200 or so 

 

full forgery kit for around $2800,

that’s eagle/manly h beam rods, arp head studs and mains, acl bearings and a gates belt and HG.

 

fair bit of spendy stuff.

may consider selling off the project hunter and 4age to focus on this more , aswell as rebuilding the 12a.

 

3 project cats are a bit on the enthusiastic side. 

[shrike]

Can you not use one of the other bottom ends? or mix and match pistons from the other motors?

[shizzl]

35 minutes ago, shrike said:

Can you not use one of the other bottom ends? or mix and match pistons from the other motors?

All pistons are in a similar state of munched

[shrike]

4 hours ago, shizzl said:

All pistons are in a similar state of munched

Well that sucks, any options to go to a 2l bottom end? I remember my dad/step  mum had an awd mazda wagon with a 2l goldtop in it. (Think fhey also did a ford version as well) whst are the piston specs any alternate option's. 

[shizzl]

Is it worth trying to put the best pistons from the other 2 motors into the 3rd?

 

 

haha cheapo

[Muncie]

 v6 swap it. Probably more Mazda v6's around then gtx gear these days.

[shizzl]

Get out and run ya bast@rd

[shizzl]

Kind of stuck at a standstill with this at the moment.

 

im ready to rebuild but no one will get back to me about parts.

 

so if any of you work in a parts dept and can price up and supply the following:

piston rings std, mains std, big ends std, HG, gaskets/seals 

hook us up so I can get my slide on.

[shizzl]

Started building my trailer while I wait for parts to arrive.

 

only doing a 4mx1.95m deck.

will be a tandem with ramps and tyre rack.

[shizzl]

I got some stuffs from STA Parts.

STD size mains and big ends, thrust washers, timing belt, tensioner and idler, and STD Hastings rings.

stripped down engine #3, the one that was in the car.

destroyed the timing pulley in the process. Got 2 spare so oops..

bores look good, crank is mint.

oil around the bearings etc smells burnt as hell.

bearings look fine.

I’ll use this block, might send it in to get honed and ring gaps done.

 

maybe even get the bottom end assembled yet. See how I feel after a quote.

 

ideally I’d like to strip the head and have the valves lapped.

stuff I know I’ve done before. Just need to man up and go full send on it.

same with the bottom end.

 

not sure about the oil pump, do I get it inspected/tested?