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 LYN Proton Saga/Iswara Driver's Thread! V28, Keep on Keeping on!

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jedi_master
post Dec 8 2014, 12:09 PM

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QUOTE(mynameisjude @ Dec 7 2014, 02:51 PM)
Thank you again for the additional info thumbup.gif . Will likely refer to 4G1series in fb ; more traffic there.
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I have tried Jasma one, Pipercam one, before finally settling on a custom matspeed one. Overall jasma and pipe not much difference, piper feels better at higher rpm but jasma has better midrange power. But different intake and exhaust setup will yield different results.

No harm trying the jasma one. Get an adjustable pulley and advance slightly.. definitely can feel difference over stock cam.
jedi_master
post Mar 6 2015, 10:44 PM

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QUOTE(low yat 82 @ Mar 6 2015, 09:39 AM)
powerzone good. but price at 460. mfa also more or less dat number. rm400+-
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yeah powerzone extractor is proven stuff but if you want to feel more difference take the opportunity to change end to end exhaust. put one large s flow at the end enough, find a silent one cap ayam also ok. piping 1.8 inch should be fine. midbox no need la.. save money
jedi_master
post Mar 8 2015, 12:03 AM

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QUOTE(zedyll @ Mar 7 2015, 11:32 PM)
some people say straight flow better but noisy, s-flow quieter but sluggish acceleration... i'm confused.  Can clarify ?rclxub.gif

But i went to an exhaust shop today, an old uncle also recommend s-flow for pickup.

Today try survey extractor in my hometown....the shop i went got a 'cap ayam' 421 extractor for iswara about RM150 inc. installation, without flexible pipe aka 'nenas'. the bends look like pressed, not a mandrel. nope. shakehead.gif  going to survey more shops....if no choice, fork out RM300 for mfa's extractor.  sweat.gif

Extra question...
Regarding radiator, 2morrow will change timing belt and water pump....wanna flush my rusty radiator....but before or after water pump replacement?
(Also summon Quazacolt  biggrin.gif  )
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Generally straight flow is better at the expense of noise. For me, I'm using a straight flow but with a midbox to reduce the drone a bit. S flow and slight increase in piping size will do for initial upgrades, not that much difference with straight flow actually and much less noise. Cap ayam 4-2-1 also should be better than stock, together with piping and muffler change should be able to feel the car rev more freely.
jedi_master
post Mar 10 2015, 09:48 AM

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QUOTE(zedyll @ Mar 9 2015, 09:40 PM)
Does anyone heard Wegow brand exhaust systems?

Quoted RM230 for Iswara 421 Extractor with flexible pipe 'nenas'.

The pipe bends are better than brandless 'cap ayam' extractors in other shop i surveyed not long ago.
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seems like not bad. one guy reviewed the 4-1 long extractor before and gave it good reviews. give it a go!
jedi_master
post Mar 16 2015, 09:44 PM

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QUOTE(zedyll @ Mar 15 2015, 08:11 PM)
Brief report about cap ayam extractors to low yat 82 jedi_master and all sifus & members here! notworthy.gif
Today I changed my stock manifold to 4-2-1 extractor with flexible pipe 'nenas' with damage of RM230...But its an ordinary steel material not the stainless steel one.

The brand is ALCRO. I thought it was Wegow.  doh.gif
The shop owner said wegow already slow down in business, perhaps bankrupt already. I dunno.  sweat.gif

But the bends are still quite decent, the extractor itself is solid and thick steel.
Compared to other shop's brandless cap ayam extractor that i surveyed the other day.....RM 150 without flexible pipe aka nenas but lightweight..... knocking the body sounds like tin milo ( i exaggerated a bit ) but you know the idea.  tongue.gif

The extractor pic:
user posted image

Before the welding.....the stock pipe is much smaller. Upgrade to 1.7" later?  brows.gif
user posted image

After installation:
user posted image
Comments: Pickup noticeably lighter. Driving with 3 passengers now feels like driving alone when still using stock manifold. Now my right foot feels heavy. brows.gif
Before buy a budget cap ayam extractor....check the thickness of metals, the pipe bends decent or not. Cap ayam mods is just pure luck, i would say.
If got money, as all sifus said....recommended to go for reputable manufacturer. Sure won't regret.  nod.gif
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Looks good bro. What's up next? laugh.gif
jedi_master
post Mar 17 2015, 07:44 AM

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QUOTE(zedyll @ Mar 17 2015, 07:26 AM)
Thanks bro!  notworthy.gif  Now continue completing exhaust system upgrades after got enough budget.

My current rusted muffler got holes....added 1 big hole i accidentally poked during extractor upgrades. now sound like cheap straight flow oredi. haha....  laugh.gif
I have 1 minor issue which is stalling/jerking 1-2 seconds after ignition off. Sometimes it occurs, sometimes not. After reading through previous owners experiences, it's between rich mixture or solenoid kong.  rclxub.gif 

So...wanna try carb tune first. The back of carb is the air mixture right?  Is it turning clockwise or anticlockwise for leaner mixture?  icon_question.gif
Due to sometimes occur only, do you think the solenoid kong or not?  ohmy.gif
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Your car is dieseling. It should occur when your engine is hot maybe after a long drive or so. Basically your fuel is still being ignited even though your plug is not firing. Its common in our cars.

Many things can be done. Timing/idle readjust should solve it coupled with carb re tune. Or maybe can consider carbon cleaning as well.

This post has been edited by jedi_master: Mar 17 2015, 07:51 AM
jedi_master
post Mar 17 2015, 04:31 PM

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QUOTE(davidke20 @ Mar 17 2015, 08:04 AM)
My carb tuning never been kacauing me other than, overhaul job, change from 4toto back to stock - whilst other surroundings been upgraded such as valve springs, lifts, and also weird setup of exhaust system nod.gif Other than the mentioned, the carb has been always running on the same setting after got out from the O2 reader and or dyno machine nod.gif Do you get what I mean?
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Bro, what 4 toto you use before and how come change back to stock?
jedi_master
post Mar 18 2015, 08:45 AM

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QUOTE(davidke20 @ Mar 17 2015, 05:59 PM)
Looks very much like this 1, dun have trumpet, but got adapter came together to fit external air filter.

user posted image

By the name of SOLEX, seldom heard of it. According to previous owner, was detached from motorcycle. Originally came with an adapter for 4AGE, so my magician sent the 4toto to machine shop, bring along a stock intake manifold from chop shop and had it fabricate a special adapter for my 4G13.

Reason for downgrading? Partly due to waifu make noise, fuel price hike if you remember there was 1 point fuel price raised up to 2.70 where nobody can tahan. Call me an idiot, sold the whole set for RM400 which that point of time really have no intention to pursue on performance anymore.
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Ooo.. nice. I also retired from 4 toto last year but mine was silvertop setup with trumpets. It was quite fun I guess especially beyond 5000 rpm but in the end still went back to single throttle body.

QUOTE(zedyll @ Mar 18 2015, 02:05 AM)
Thanks bro for the advice!  thumbup.gif

Story before dieseling occurs.....

First, i went for carb tuning (no machine aka manual sweat.gif  ) to reduce my FC....since my exhaust emits black sooty smoke everytime i press the gas pedal and FC is hella high! (RM20 [RM2/L] for 60km)

After carb tuning,  used the car about a week with good FC. But 1 problem emerges....pinging sound when accelerate. I went to my mechanics to tune ignition timing with timing light. The pinging almost gone except when climbing hills with with a slight pinging. My mech said slight pinging knock is okay. No dieseling problem yet.

Then, i went DIY changing the o-ring of distributor since there's quite of oil leaks. The distributor position was marked with correction pen. After finished replacing o-ring, i turned the distributor slightly 1-2mm anticlockwise (from marked position) therefore retarding timing some more. No more pinging even at hills.

Then, the dieseling started occuring occasionally.  rclxub.gif
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How old are your plugs? If its due or nearly due for change, maybe just change them. Might be a quick fix, nothing to lose.

This post has been edited by jedi_master: Mar 18 2015, 08:46 AM
jedi_master
post Mar 18 2015, 05:56 PM

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QUOTE(davidke20 @ Mar 18 2015, 10:18 AM)
Frankly, the 4toto experience was all about responses. And yeah, especially after 5krpm. The trouble is, my 4G13 ran out of breathe at about 6.5krpm. Despite having enough fuel after tuned up the carbs, it can still tarek all the way beyond 8krpm, I don't feel the sprint anymore. Do you get the idea of from 1k ~ 4krpm tarak VTEK, after 5K rpm it goes very smooth and back stickingly fast. But after 6.5k rpm, the backsticking feel gone sad.gif According to magician, the valve train already topped out. The birds already standing at the fence where the stock cam aren't pushing hard enough. Even if we change the cam, a good chance where the valve spring isn't strong enough to retrace the valves any faster, a chance where the valve meets piston is there where standing at 8krpm laugh.gif Added, a friend of mine whose running on reinforced valve spring, customized billet cam blown the valve hell out of the rocker, smashed through the bonnet doh.gif I was lucky to not dig into that deep before I realized I'm spending money into a black hole. 1st gear 8krpm, shift to 2nd ady 6krpm, tarik until 8k, upshift again on 3rd, again stuck at 6krpm++. It feels like totally out of power band. The car isn't going any faster other than the intake and exhaust screaming very nicely, sounding like a real VTEK.

The good thing that I realized after switched back to stock pistoned carbs, it isn't going much slower then when I was 4toto. My tuning was set to the lean side according to the external CO sensor. With slightly retarded ignition, the entire powerband has been switched over to low/mid end. However, the valvelifts has been further released. I wasn't sure why magician set it up that way, but was told due to lean setup and early torque band, the loosen valvelifts will help to sustain inertia during cruising. True enough, the setup gave me a consistent of 13km/l on a regular basis despite the horrible KL traffics. On straight hiway drive back and fro JB will easily yield me 18km/l and above.

It feels like this wub.gif Very spontaneous. Good response. Very driveable.


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Yeah I get it. I went through 3 different cams of increasingly higher duration on my 4 toto. The first cam was mid range torque 27x duration, upgrading to 28x one gave 4-5 whp across the upper band, finally settled on a 29x one, coupled with custom exhaust header finally worked well with the 4 toto's high end love, yielded 20 whp gain between 5000 to 7500 rpm.. Basically I came to conclude that 4 toto on our engine no point except for high revving, and that also must have large cams and well designed exhaust header to unlock its potential. But low end suffers.

And that was it, now back to 1 toto mode. Still using the 29x cam though. No more issue with low-mid range power.
jedi_master
post Apr 13 2015, 10:23 PM

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QUOTE(thevool @ Apr 12 2015, 10:02 PM)
Seriously? "Pretty souped up"? This video's 0-100 is about 10-11 seconds. My previous LMST (which I unfortunately and sadly have to part with), does it in 9 - 9.5 seconds. I think i still have the 0-100 video that i recorded before i sold it haha.. Should post it up someday. smile.gif I do miss that car and manual tranny. But if you ask me if I wanna own a saga lmst again? .... Nah.
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Previous incarnation of my Iswara was with weber, 87 whp/13.3 kgm. 0-100 was around 10-11 seconds, very similar to this video. After switching to 4 toto (and different cams, etc.), hit around 110 whp and the speedo goes much faster than that, but a lot of wheelspin between gears 2 and 3 becomes quite unavoidable.
jedi_master
post Apr 14 2015, 11:59 PM

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QUOTE(thevool @ Apr 13 2015, 11:43 PM)
Wow weber! haven't heard that word in awhile .. Weber was the one thing I always wanted to try for my LMST last time, but never got the chance. Heard that FC was high, and maintaining it was troublesome. (Or was that twin weber, i forgot.)

Shouldn't weber do much better than 10-11 seconds? I thought weber gives some good power.

What's a 4 toto ?
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Looking back at old videos, 10-11 secs was with 2 guys in the car, slow launch and careful shifting.. so maybe there was room for improvement. 4 toto - individual throttle bodies. I swapped my weber to a fuel injected setup with open throttles, trumpets without air filter. New setup lost some low end but massive gains in the top rpm range. Never recorded a 0-100 on video, but definitely much faster.
jedi_master
post May 7 2015, 10:27 PM

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QUOTE(zedyll @ May 7 2015, 07:18 PM)
I regapped my spark plugs from 1.1mm to 0.8mm-0.9mm. No more dieselling occurs! Note that guys! thumbup.gif
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what heat range are you using?
jedi_master
post May 13 2015, 08:45 AM

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Hi guys, does anyone know of aftermarket big brake kits for our iswara. Or at least something which can fit without major modification.
jedi_master
post May 13 2015, 08:50 PM

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QUOTE(davidke20 @ May 13 2015, 07:58 PM)
A bit hard to find leh that one. Seems like halfcut rear discs a lot easier to get than a nice front set.

But apart from halfcut, there are so many brand new aftermarket 4/6 pot for satria neo, perdana, etc. Wonder how much mods it would take to fit.


jedi_master
post May 13 2015, 10:23 PM

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QUOTE(davidke20 @ May 13 2015, 09:25 PM)
Perdana set basically berak&pray. The only thing needed is custom fabricate the mounting extension plate for the berak kaliper.
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Hmm.. need to find a good workshop for the custom job then. Don't want to gain beraking power but screw up something else instead.
jedi_master
post Jun 3 2015, 12:39 PM

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good stuff bro. i'm tempted to get a straight flow myself as i want to reduce noise. anyone here know of places with good selection of jdm original branded mufflers? dont want used items.
jedi_master
post Jul 28 2015, 08:47 PM

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QUOTE(zero5177 @ Jul 27 2015, 12:00 PM)
The meter will also misbehave even the car is on idling... but that only happens once in a while...
I'll give a try on checking the autochoke... by the way could this autochoke make the car so shaky all these while?

This car do have some symptoms of bad autochoke previously like the engine will die off during cold start and engine behave normally after engine becomes warm.... but now is shaky all the time especially RPM is around 1.5k
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Don't think it's your ignition, just a flat spot in your carb tuning causing your engine to run lean at that rpm range. The lean spike would result backfiring of exhaust as well. Actually you can just get someone to rev your car to the problematic range, and adjust the air/fuel screw on the carb until the problem just goes away, but don't over compensate.
jedi_master
post Jul 29 2015, 01:36 PM

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Yeah likely is carb related. Do get it checked. Also equally possible is that you have a vacuum leak somewhere. But that's a bit harder to check sadly..
jedi_master
post Aug 1 2015, 08:18 PM

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QUOTE(Quazacolt @ Jul 29 2015, 03:52 PM)
btw bro, you still close with powerzone? i am thinking to get powerzone extractor from them... 4-2-1 got right? how much was it again?
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Around 400++ if not mistaken.. yeah its 421 chromed mild steel.
jedi_master
post Aug 1 2015, 10:57 PM

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QUOTE(Quazacolt @ Aug 1 2015, 09:00 PM)
aluminimized steel as they called it, which can be wiki'd lol

pricing seem to stay the same for so many years... really tempted to get mine done. so far they ran out of stock, so have to wait la.
i am whatsapp'ing with amrie
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Still keeping the Iswara?

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