boost handled by 4G93 NA block..

[jackcwj11]

just curious to know if anyone out there running 4G93 block with turbo set up.. what is the max boost that the block can handle? cause i am currently on a rebuilt project for my current damaged engine.. please do share and TQ

 

[ehdrian]

wat rods and pistons are u using?..

 

[jackcwj11]

planning 2 use back original pistons n conrod with thicker gasket

 

[peterj]

better stick with low boost if like that,not more then 0.7 bar depent on ur gasket, but why dun bro u get better low comp piston like 4AGZE super charged piston?

 

[jackcwj11]

but if like u mentioned that i use the 4AGZE pistons.. i think i'll hav 2 bore the is it? coz i have heard from millennium motorsport mention that running at 1.4bar wiv stock internals also no prob.. running for 3 years d..

 

[ehdrian]

nonit to rebore also can cos the smallest 4agze piston size is 81.0mm..

 

[crayon_wei]

use to boost 2.3 bar with duratech conrod+supercharger piston+GT30

 

[jackcwj11]

use to boost 2.3 bar with duratech conrod+supercharger piston+GT30

if u dun mind me asking using NA block or GSR?

 

[ehdrian]

Y wanna force feed using NA block when there is block which is already meant for t/charged?..

 

[DanzEterna]

true..just use back the 4g93t block.

 

[azrish]

use to boost 2.3 bar with duratech conrod+supercharger piston+GT30

how about the crankshaft bro? can used back the standard 93 NA block?

 

[speed2horizon]

how about the crankshaft bro? can used back the standard 93 NA block?

That would be the least worry of yours... The crank can take more than 400WHP.
Worry about the conrod (if u're going for high HP) first... The crank is similar to the 4G93T cranks.

Urm... Infact, they share alot of common parts.

On the short block, only differences are

Low compression pistons
Oil squirter/jet

The cylinder head is something interesting.

 

[boi]

but if like u mentioned that i use the 4AGZE pistons.. i think i'll hav 2 bore the is it? coz i have heard from millennium motorsport mention that running at 1.4bar wiv stock internals also no prob.. running for 3 years d..

if u set 2 bar boost at NA block also no prob if u occasionally floor your pedal...try to push your engine like NA engine with 0.7 bar then see what happen...as i know if u bolt on your NA block the max safety boost only arround 0.5-0.6bar and must be low compression...if u use stock piston 0.5bar already easily rip your engine...already saw many case like this...

if u cant afford to buy GSR block (coz very expensive), then rebuilt your short block propperly...the MUST item such as thicker metal gasket, low comp piston (oem GSR should be enough), oil squitter / jet & a good oil pump (4g93T/NA twin cam) should have inside your block if want to enjoy boosting 0.7bar continously and constantly...

normally those people bolt on their engine didnt take look at oil pump...this is very important item for turbo for those who really know abt it...weak pressure from oil pump can be a risk to rip your engine...

 

[speed2horizon]

if u set 2 bar boost at NA block also no prob if u occasionally floor your pedal...try to push your engine like NA engine with 0.7 bar then see what happen...as i know if u bolt on your NA block the max safety boost only arround 0.5-0.6bar and must be low compression...if u use stock piston 0.5bar already easily rip your engine...already saw many case like this...

Well, numerous 4G67(NA) has been producing 4++WHP on DynoDYnamics with no problem. Same goes to 4G93 with 2++WHP on DynoDynamics. The key is tuning.

if u cant afford to buy GSR block (coz very expensive), then rebuilt your short block propperly...the MUST item such as thicker metal gasket, low comp piston (oem GSR should be enough), oil squitter / jet & a good oil pump (4g93T/NA twin cam) should have inside your block if want to enjoy boosting 0.7bar continously and constantly...

Thick metal gasket is just a decompression method. If low compression piston is used, there's no reason for thick metal gasket anymore provided there are some clearance issue.

Oil squirters are mainly to cool down the piston crown. I've been boosting 1+bar with a GT2560R for 2 1/2 years with 4G92P with 4G93 DOHC OEM oil pump. No problem. Well, an oil cooler will add on some advantage here.

normally those people bolt on their engine didnt take look at oil pump...this is very important item for turbo for those who really know abt it...weak pressure from oil pump can be a risk to rip your engine...

Yes... But OEM Oil pump are sufficient. As long as they are in good condition...