which turbo? help!

[ev0lving]

Hi guys, new to the site, been researching the topic a lot in the last few weeks and have ended up on this site numerous times. thought id ask my specific questions directly(search function is only so helpful).

ok so i have a 4g93t motor in my garage, its basically standard. standard afm injectys ecu etc. i looked at the turbo (TD04L), and found it has quite a bit of up and down play on compressor side. Ihave a td05h 46 numberd 16g turbo lying round. if i were to use it on the 93t would i need to run less boost than what the td04 runs due to the higher flow? if so what psi is "safe"? i dont wanna do anythng to blow a rod as i hear they r shit. what other mods r needed to run ths turbo safely? not lookng for huge boost just 11psi or so.

thanks!

 

[GSRWRC]

Add some 510cc injectors, an Evo AFM and have a look in the sponsors section for ECMLink in regards to ECU and tuning. It'll be sweet running off the Evo wastegate actuator at 'base' boost.

Add some more intercooling and you'll be fine up to 1bar/15ish psi and maybe more. I would also consider a Walbro or similar fuel pump and an adjustable FPR to keep fuel rail pressures in check.

 

[ev0lving]

Add some 510cc injectors, an Evo AFM and have a look in the sponsors section for ECMLink in regards to ECU and tuning. It'll be sweet running off the Evo wastegate actuator at 'base' boost.

Add some more intercooling and you'll be fine up to 1bar/15ish psi and maybe more. I would also consider a Walbro or similar fuel pump and an adjustable FPR to keep fuel rail pressures in check.

Would the evo afm etc be necessary? how would it go on all gsr bits but the evo turbo? danger to rods possible? id have external gate with 9-10 psi spring? not that keen/am a student so cant reaaaally afford link ecus etc. afpr with a piggy back afc maybe? just after cheapest options to make it work but not to huge hp or to a point where shes gonna blow haha

 

[BMGTZ]

please dont take offense to this as none is meant in the comment.....just advice.

if you cant afford to to the stuff that needs doing after you change the turbo to a bigger turbo. just get another TD04

they are cheap because most people that have some bucks to throw at the engine/ecu/injectors and fuel pump usually ditch the small turbo first

 

[ev0lving]

that was my preferred option, quick spool suits me down to the ground. just have a <1000km 16g lyin round so i thought id see wat the options are. Cheers for the advice guys. im also after some cams either 93 or 93t not fussed, but cant seem to find any anywhere? any ideas? im in nz, standys will do

 

[GSRWRC]

that was my preferred option, quick spool suits me down to the ground. just have a <1000km 16g lyin round so i thought id see wat the options are. Cheers for the advice guys. im also after some cams either 93 or 93t not fussed, but cant seem to find any anywhere? any ideas? im in nz, standys will do

email me some pics of the turbo, I may be able to rebuild it for you reasonably cheaply. (I'm in Morrinsville, not far from Hamilton)

[email protected]

 

[youda]

tdo5 16g will run fine with stock ecu, inj, afm at ten psi. alot of gains to be had with an intercooler setup. if you want to run a little more say 15psi you need to upgrade your fuel and tune otherwise you may end up retrieving piston bits out of your garage roof. keep in mind there are hundreds of ways to tackle this ranging from $2-300 for an alright setup to $1000 to wring every kw out of that setup. if you are going to follow one persons advice i sugest making sure they have tried it before and they know EXACTLY what you want out of the car.

 

[ev0lving]

GSRWRC - i have seen you rebuild them on trademe, il keep it in mind for sure.


I plan to not change the internals. I have a 550x250x75 intercooler im gonna use. I dont wanna be running more than 10 - 12 psi. Ifthe 16g is fine on stock 93t ecu etc, what are precautions i should take if going down the path of leavin it basically all 93t parts? maybe fuel reg and pump ? some sorta afc? whatever i can do (on a moderate budget) to prevent the internals from being sent through my bonnet. bearing in mind its gotta be reliable as a daily but a bit more peppy than the stocker. the helps choice guys keep it comin

 

[GSRWRC]

GSRWRC - i have seen you rebuild them on trademe, il keep it in mind for sure.

Cool, if the wheels/housings haven't been damaged I should be able to re-co it for under $300 all going well. If you plan on only running 10-12psi there's probably not much point in going for the TD05, there won't be a hell of a lot of gains, and you'll lose the TD04 response (not saying the TD05 is bad, but they really wake up at 15-18psi). You can run the TD04 up to 14psi on the stock fuel system with the i/c you mention for some extra pep. Back in the day I used to run that sort of boost when my GSR was otherwise stock bar a pod filter.

 

[ev0lving]

i wanna have it so im not boosting heaps jus a tad over stock and i like havng boost kick in 3.5k ish rpms, suits the way i drive thats why i thought td05 cos a-i happen to have 1, b-more lag than td04 whch may suit me better. If i can run the 16g on a fully stock gsr setup (aside fuel reg, boost cut & raised rev cut) WITHOUT hurtng the motor then il gladly do so. unless it leans out too much?

 

[GSRWRC]

If you're after the cheapest option as you mention above, fitting the TD05 will cost more. It's not a direct bolt on, the dump pipe will need modifying and exhaust manifold needs porting to match.

 

[ev0lving]

not necessarily cheapest just thins that arent $10 but not $000's either

 

[youda]

if you can swap your tdo5 16g for a tdo5 14b. then run a walbro pump and aftermarket fuel preassure reg.should be good for 14psi and will give you that kick in the pants your looking for while not giving you so much spool up time. also once this is done you can make some more upgrades when you can afford it without going backwards. for instance my next few stepps would be 510cc injectors and a safc2 all up about $400 tune for 16 psi and you will be looking at low 13's easily.

 

[ev0lving]

that may be good option is the 14b a td05 housing? thats the vr4 turbo??

 

[GSRWRC]

I give up. You're clearly not going to be happy until someone tells you what you want to hear. You contradict yourself several times in this thread and it's very frustrating:

"that was my preferred option, quick spool suits me down to the ground."

"i wanna have it so im not boosting heaps jus a tad over stock and i like havng boost kick in 3.5k ish rpms, suits the way i drive thats why i thought td05 cos a-i happen to have 1, b-more lag than td04 whch may suit me better."

"just after cheapest options to make it work"

"not necessarily cheapest just thins that arent $10 but not $000's either"

I'll leave some key points before I exit this thread.

- Upgrading to a TD05 (be it 14B or 16G) and leaving the fuel system stock is STUPID
- Upgrading to a TD05 will cost MONEY
- There is plenty of extra poke to be found in a 4G93T long before you need to upgrade the turbo. Especially if you're only after a bit more extra grunt than stock

 

[ted]

Im with GSRWRC make up your mind bud whats your budget? Power isnt free.

 

[ev0lving]

budgets prob 500 or so. bearin in mind iv alrdy got a spare 16g. also, put the motor and loom back in today, theres 2 vacuum things with electrical connections one from intake and fuel rail and one from wastegate. if i go to adj. fuel reg and extrnal gate,can these be removed? im nt sure what thy are but im assuming ones factory boost cut and fuel reg solenoids??

 

[EVOCPE]

If you already have a TD05 then throw that on, your budget is $500, you should be able to port the manifold, buy EVO7/8/9 standard fuel pump, 510cc inj, EVO AFM and an EVO ECU for that

No need for external gate or aftermarket FPR

 

[ev0lving]

that may be the way to go. I'll try get hold of that lot.

took rocker cover off. boths cams lobes are quite rusty, was wondering if anybody has a pair? OR could i use 4g91 cams? have spare 4g91 motor in good condition

 

[caged]

I went 12.5@110mph on 15psi on my tdo5 budget built gsr, spent $550 on it. standard ecu, afm and unopened standard 4g93. used a tdo5 small with about 3 huge cracks in the exhaust housing lol, 510cc injectors, afc2 an old evo 5 intercooler with 90% of the fins bent and an old walbro. Dont wast money on evo ecus and afms when an afc will cost the same.