Rebore Campro Block and high comp pistons.

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Apr 9, 2015
12
0
501
Melaka
Hi guys, I'm planning to do 1.3 piston conversion to my 1.6 campro.

The workshop guy said he needs to open the block to check and see if there is any freeplay of the pistons, if so, the block needs to be rebored either 0.5 to 1mm.

Is it safe to rebore block? Or is it even safe to bump the compression of my campro? thanks guys :adore:

Can increase compression without management ma?
 

Waiora_ProTuner

500 RPM
Senior Member

Waiora_ProTuner

500 RPM
Senior Member
Nov 29, 2006
619
221
1,543
rebore is normal...not by much...
especially during overhaul or piston blow...

campro compression is 10:1...not as high but high enough for road use...
no need management, but need to be cautious on knocking...
 

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Thread starter
Apr 9, 2015
12
0
501
Melaka
rebore is normal...not by much...
especially during overhaul or piston blow...

campro compression is 10:1...not as high but high enough for road use...
no need management, but need to be cautious on knocking...
Ahh I see.... using 97 fuel he say no knock, better in fact. thank you =)

Maybe management down the road hahaha
 

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator
May 11, 2010
29,955
8,371
1,713
Petaling Jaya
Ahh I see.... using 97 fuel he say no knock, better in fact. thank you =)

Maybe management down the road hahaha
Can use Ron97 at the moment since both 95 & 97 no more subsidy so only 35 sen difference, but if the subsidy comes back in play, then 97 will be costly....:smokin:
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,509
1,690
1,713
The Mines
campro ecu intelligent la...for minor mods like that the ecu will compensate...so no worries...
 

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator

vr2turbo

Beyond 20,000 RPM!
Helmet Clan
Moderator
May 11, 2010
29,955
8,371
1,713
Petaling Jaya
Can use Ron97 at the moment since both 95 & 97 no more subsidy so only 35 sen difference, but if the subsidy comes back in play, then 97 will be costly....:smokin:
Oops from this month, 40 sen difference, looks like must go back to Ron95 dy.....:banghead:

---------- Post added at 12:28 PM ---------- 6 hour anti-bump limit - Previous post was at 12:27 PM ----------

campro ecu intelligent la...for minor mods like that the ecu will compensate...so no worries...
Compensate for better ok, sometimes correct your mod so becomes no more mod....:biggrin:
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,509
1,690
1,713
The Mines
Oops from this month, 40 sen difference, looks like must go back to Ron95 dy.....:banghead:

---------- Post added at 12:28 PM ---------- 6 hour anti-bump limit - Previous post was at 12:27 PM ----------



Compensate for better ok, sometimes correct your mod so becomes no more mod....:biggrin:
the ecu will compensate ignition timing if knocking happens and stick to correct a/f ratio....wants more power need to tweak the a/f ratio richens it...
 

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Thread starter
Apr 9, 2015
12
0
501
Melaka
the ecu will compensate ignition timing if knocking happens and stick to correct a/f ratio....wants more power need to tweak the a/f ratio richens it...
Bro Pomen, how do I do that? Tweak A/F ratio? Is it install an Adj Fuel Regulator?

I just received my ride, hehe panting period... Cannot tahan o driving below 3k RPM..... Workshop say u can bantai the car straight.. But no hard launch.
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,509
1,690
1,713
The Mines
Bro Pomen, how do I do that? Tweak A/F ratio? Is it install an Adj Fuel Regulator?

I just received my ride, hehe panting period... Cannot tahan o driving below 3k RPM..... Workshop say u can bantai the car straight.. But no hard launch.
got piggyback ecu to use....campro ecu very pandai...it doesnt work like mitsubishi common way of mod...


btw...u should be more carefull not to do hard launch very often....later conrod snapped with crank bearing woooo.... (campro weakness)
 

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Thread starter
Apr 9, 2015
12
0
501
Melaka
got piggyback ecu to use....campro ecu very pandai...it doesnt work like mitsubishi common way of mod...


btw...u should be more carefull not to do hard launch very often....later conrod snapped with crank bearing woooo.... (campro weakness)
How they use Campro for Drag Battle???
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,509
1,690
1,713
The Mines
How they use Campro for Drag Battle???
proper engine rebuild, better conrod, better bearings and i bet they re-machine the crank for better dimension/clearance and do treatment to increase the strength as well....basically a full race engine rebuild...so far better than whacking stock factory engine...
 

kayour

Known Member
Senior Member

kayour

Known Member
Senior Member
Apr 5, 2006
326
41
1,528
recently very hard to find tecnical posting like this...after most of the car forum at malaysia died..heheh
 

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Thread starter
Apr 9, 2015
12
0
501
Melaka
proper engine rebuild, better conrod, better bearings and i bet they re-machine the crank for better dimension/clearance and do treatment to increase the strength as well....basically a full race engine rebuild...so far better than whacking stock factory engine...
Ahhh I see... So it has been run-in for about 200kms+/-... I realise the RPM will drop very significant.

My normal idle range is 1k RPM. It drops to about 500 or sometimes the engine just dies... Its really weird. Is it because of the compression?


Sidenote: Aircon doesn't work. When I switch on the aircon, it has a change in sound, but no cold air. It blows air only.
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,509
1,690
1,713
The Mines
Ahhh I see... So it has been run-in for about 200kms+/-... I realise the RPM will drop very significant.

My normal idle range is 1k RPM. It drops to about 500 or sometimes the engine just dies... Its really weird. Is it because of the compression?


Sidenote: Aircon doesn't work. When I switch on the aircon, it has a change in sound, but no cold air. It blows air only.
not sure...quite hard to diagnose that online :listen:
 

Im Not Fancy

Junior Member

Im Not Fancy

Junior Member
Thread starter
Apr 9, 2015
12
0
501
Melaka
not sure...quite hard to diagnose that online :listen:

Stupid compressor died.. As for the RPM drops, its resolved. Because the ECU got reset and reset. (I disconnected the battery multiple times because it won't start at times)


Now 500km run-in, looking good. Car has low-end power. I like it. But still not enough "oomph".
 

Rafale

Known Member
Senior Member

Rafale

Known Member
Senior Member
Dec 10, 2006
73
7
1,508
Selangor KLIA
I believe there's already stroker kits manufactured by Obuddy.. 90 & 92mm stroker vs 88mm stock. Coupled with 2mm oversize bore will increase the displacement to 1758cc from stock 1596cc, 162cc difference.

This is the link: https://goo.gl/v3XyUv