hi all sifu sifu here...
i hv an iswara sedan year 2000 with body frame and suspension still nice (well maintained)... just the original engine 4g13 kong koz always rev high... even i got change the engine oil in time and using better engine oil all the time... below is my true story with my iswara... its a fun with my iswara and i had learn a lot with it...

4g13 is not powerful enof for me so always rev high and also always do burnout using ori 13inch rims and tires b4 the rims bengkok and upgrade to 16inch... those ori rim and tyres often make me accidentally drift on wet road especially when cornering too fast (with lowered spring and absorber plus front strut bar)... real drift... not powerslide or oversteer... the lowered iswara is stable when i cornering that i can do those drift action like reflect action when the rear tires skid accidentally... after changing to 16 inch rims with 205/45/r16 tyres the iswara become so stable that i cannot perform many act on wet road... dont even think to do it on dry road...

the lowered spring is too hard that i don't felt comfort when driving on bumpy road that after the lowered absorber (4get what brand liao) kong then i chage back to apm shock absorber with normal spring... this time the car become so damn high that the car will roll and twist when cornering that i felt that the car want to lost control and turn over when hard cornering... for example, if i can turn the roundabout with 70kmh steadily without skid with lowered spring and absorber but with normal absorber and higher spring i can just turn the same roundabout with speed 55 - 60kmh and the car will swing like hell when i do cornering...

at first i want to change the engine to 4g63t and "play" with my car without endorsement ( coz the engine mounting will surely be relocated if not mistaken and it is impossible for the car to pass puspakom endorsement now without...) but get stopped by my parents... after negotiate with them then they allowed me to modify my car legally... i had put a budget of rm10k ( save from ang pow money and my work) in modifying my car...

now plan to change to 4g91, coz still in range (1300 * 125% = 1625cc)...
actually i want to upgrade to 4g92 mivec engine for more hp but realy hard to find that engine in sarawak...

i want to ask is wat i can modify onto the 4g91 engine so that i can plug in turbo charger or supercharger??? does those turbo boost help in increasing the hp of this engine (without modifying the engine)???

for what i know is illegal to change the engine block... so for my case can i just bore the cylinder to fit bigger piston if i want to turbocharge the engine??? which piston is suitable for this, 4g93,4g63 or toyota piston???
did i need to change also the gear box??? what turbo kit or supercharger kit is suitable or can be modified to fit into my car???

my iswara now got 16 inch rims and i plan to upgrade also the brake system from stock to vr4 front and rear disc brake... can i use those aftermarket brake disc which is bigger and with holes which is more 'sporty' look??? can suggest what brand is better???

if i change the engine to 4g91 then can i stick back to the 16inch rims or i need to change to 15inch rims for better acceleration???

i had already put on UR front strut bar in my car for better stability when cornering but i still don't satisfied by the stability of my car... what other important bars i hv to put on to increase the stability of the car??? did bigger front and rear anti roll bars help???

if i change the engine i need to change the whole ekzos system also... to increase the engine performance did i need to change the original extractor??? what is the difference between the extractor 4 to 2 to 1 and extractor 4 to 1 in increasing the engine performance??? how big is the piping if i need to have better fc and also increase in engine performance??? which type of muffler i can use??? what is the differences between the muffler with over tip or round tip???

that's all i want to ask now... thank you for your advice...

sorry... because i saw the 4G subforum first then i finally found this place... i tot this place already missing coz so long not hanging around this forum...
so i will stick to here from now onwards...

This post has been edited by samuraiman: Aug 17 2010, 03:30 PM

it is hard to find 4g92 mivec manual transmission as i m in sarawak... what do u mean by "aligned and welded"??? if i change to 4g92 i need to relocate all the engine mounting??? if lik tat still can pass the puspakom endorsement??? (i need my car to be street legal)

and for all the ultra racing bars my friend who own a workshop says not all the bars is important as i m not going to for rally... he says only some of the important bar i can put onto my car
1. front upper strut bar...mayb change to apexi (if not mistaken is this brand) 4 point
2.front anti roll bar
3.rear anti roll bar
4.room bar
5.rear strut bar
6.rear upper bar

i dont know actually how many bars left but if if my budget is enof then i will put on all...

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Added on August 17, 2010, 3:14 pmthank you sifu...

for what i mean is a 4g91 original with bot... not modifying the 4g91 enigne (all the interior parts stick back to original 4g91 parts)...

as i know it is illegal if i use 4g91 with 4g63 block, rite??? the engine number is stamped on the block... if i past endorsement with 4g91 and change the block then count as illegal too...

for the tyres can give suggestion on good tyre??? now my car is using two continental sportcontact 1 205/45/r16 for the wheels infront (coz at the shop tat times got only 3 tyres that i cant change all 4) and two cheap indonesia corsa 205/45/r16 tyres at the back...

This post has been edited by samuraiman: Aug 17 2010, 03:15 PM

all head lamp can b fitted... just if u dare to modify it

for me after my head lamp broken i mod in nissan s13 projector head lamps...

i havent fill the big gap between my fibre bonet and the lamp but will do it and respray the whole car after replant the engine...

This post has been edited by samuraiman: Aug 17 2010, 03:27 PM


Attached thumbnail(s)

what is the differences between good tyres and average one??? now if i want to change tyres i will do burnout until 'song' with my present tyres ( front 205/45/r16after install 4g91 with BOT then change to good one... very sayang to use good and expensive tyres to do burnout...

and about the spring... the car will shake if drive on bad road condition after i install lower sport spring... if i install back to iswara ori spring than will become high, comfort but not steady when cornering... how can i modify so that i feel comfort when driving and stable when cornering??? did UR anti roll bar helps??? can i install more than 1 arb in front (just kidding)???

i think to separate my questions into two parts... abt the engine 4g91 i will ask at technical talk n abt the rest of the part of iswara i will ask here... rite???

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Added on August 17, 2010, 10:49 pm10q... i totally forget 4g92 got non mivec... my mechanic says i can install 4g92 without relocate the engine mounting... just need modify a bit of the original engine mount... donno is true or not...

for the front strut bar, which was installed in my car is the three point one... just like in the picture... but now already bent a bit coz i once self accident... the front wheel at the passenger side hit the road divider after i come out from roundabout too fast and my car fly into the bushes... the car rotate 180 degree horizontally and the driver site hit the ground too hard that both tyres at driver site burst... after the car was repaired then i notice the front strut bar was bent a little bit but it was not covered in the insurance... my mechanic says if i don't install that bar surely the structure of my car will run... now the body structure of my car still ok...

sorry... 4g91 original engine no modified then BOT...

sorry... typing mistake... is 4g91 with 4g93 block... i want my car to be road legal that i cant change the engine block... i heard that turbocharge it is illegal also... rite???

This post has been edited by samuraiman: Aug 17 2010, 10:49 PM

my tyres is still 95% of thread infront and 85% behind... i want to do burn out coz is lousy tyres... and for the grip those tyres has grip far better than the original iswara 175/??/r13 one... even on wet road i feel more steady...

i had already ask my friend who had tried the coilover absorber and they say the spring is as hard as the sport spring... i think of getting original spring and arbsorber with bigger arb custom make from ur or taken from halfcut to replace the one originally in car... as for my understanding, if the front arb is too thick that the car doesn't roll abit during hard cornering the front tyres will skid coz no pressure applied onto the outer tyres to prevent skidwhen turning... and for the rear abs if too thick the rear tyres will skid easily and each times when cornering hv to drift through the corner... correct me if i m wrong...

if 4g91 with 4g93 block i will rather get a 4g93T... but i just can get to 4g91 coz 4g92 is harder to get and i can only upgrate to 1625CC... if 4g91 with 4g93 block is it count as 1.6L or 1.8L??? can i use the 4g93 code and register as 4g91???

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Added on August 18, 2010, 12:37 amTHAT'S NOT POISON!!! THAT IS T VIRUS WITH NO VACCINE!!!

i want to turbo charge the 4g91 not becoz of the BOV sound (although i lik the sound), i want to extract more HP from 4g91 until reach it limits... i like the push back feel when the car accelerate faster...

This post has been edited by samuraiman: Aug 18 2010, 12:39 AM

i want my car to be road legal... but the original engine is 1.3L... for 1300 * 125% is 1625cc...

my mechanic says that it is easier for me to upgrade to 4g91 as 4g91 MT is easier to get compare to 4g92 MT coz i m in sarawak... and if i want to upgrade to engine more than 1.6L it can be say as impossible to get approved (or else i use another way)... 4g93T is 1.8L and 4g63T is 2.0L...

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Added on August 18, 2010, 3:26 amsorry... for what i mean is the 4g91 with 49g3 block using the 4g93 code but register as 4g91(1.5L)...

This post has been edited by samuraiman: Aug 18 2010, 03:26 AM

i tot 4g61T is turbocharged engine that cannot pass endorsement... that is what my mechanic told me... how much is the engine??? will it over rm10k???

and compare both engine 4g61 and 4g91... which one is older??? can i still get the spare part for 4g61???

for the 4g61T if i want just istall the whole engine with original turbo into my car or did i need to change bigger turbo, bigger intercooler , e-manage, and so on to extract more power from it???

This post has been edited by samuraiman: Aug 18 2010, 07:39 AM

is iswara ok with those pro ride shock absorber and sport spring coz i feel the spring is very hard that it was not comfortable when driving on bumpy road... i can feel my case flex and twist and my door seal got sound...

i m at sarawak here n can get only 4g91 AT... below are the picture of the engine i will bought... i need to take time to check and buy the things myself...
as from the seller the engine is 93% new and he can start for me when i go to see the engine...
any good advice for me if i wan to check the condition of the engine???



This post has been edited by samuraiman: Aug 19 2010, 03:31 AM

oli leak??? lubricant oil leak??? seal broken??? or just oil split from other engine???
the lowest price he offer is rm5300 without shipping...

This post has been edited by samuraiman: Aug 19 2010, 07:31 AM

after doing some research and got adviced by my mech, i decided to go from modifying my iswara stock 4g13(to 4g16 by using 4g16 stroker kit) to have engine transplant... as i cant get any suitable engine at my place (my aim is get a 4g91 or 4g92 or 4g92 mivec), at last i go for 4g93t gsr engine (the only halfcut i can get after searching for 1 month... haiz)

i dont want to hear any commen that 4g93T is not suitable for iswara because I HAD DECIDED TO GO WITH IT!!! i just want to know what to do do make iswara so that it can withstand the power of the engine...

for what i had done:

1. taking out stock 4g13
2. disassemble the 4g93T GSR halfcut
3. put 4g93T into iswara engine bay to design for custom made engine mounting... (not relocate engine mounting but is costom made mounting which connect the engine to the chassis)
4. disassemble the whole 4g93T to do overhauling n cleaning (almost die cleaning all pistons with petrol)

what i will do onto the 4g93T...
1.port n polish cylinder head
2.install racing bearings (king bearings)
3.upgrade turbo to td05 16g (coz want to be street drived)
4.upgrade injector to 650CC each
5.use microtech
6.use custom turbo manifold with wastegate
7.use profect b boost controller
8.use big intercooler (bigger than GSR, evo3)

as the gsr halfcut comes with automatic transmission and i haven't found suitable lsd gearbox so i will use back stock gearbox 1st...

i will put on all ultra racing bars if needed after engine installation... i just want any advice if i just had to put necessary bars or i had to put all bars... got someone advice me if i put all bars some parts of the chassis will torn easily... is that true???

i know that for fwd car with big hp engine, when turbo kick in the front wheels will lose traction (except if use semi xxx i 4get already tyres)... i m using 16inch rims with 205/45/r16 tyres n how about if i use bigger tyres??? like 205(215)/50/r16??? i have another set of 2nd hand japan enkei rims, front 205/50/r16 back 225/50/r16... haven't tried on my car... if the tyres was too big and will knock onto mudguard then i will do a little bit wide body... hehe...

below is some of the process picture... (lasy to post all pictures... about 100++)


my car stock 4g13 engine


4g93t in halfcut


AT taking apart from engine


4g93t with 4g13 transmission


smaller housing... haiz...


4g93t put into engine bay 1st for disigning custom made engine mounting


engine disassembly


head with cams


engine disassembly in process


valves



This post has been edited by samuraiman: Dec 28 2010, 01:27 AM