over bore 1.6L -> 18L Tips

[triniGT]

was up all
want to start a project
over bore 1.6 L DOHC to 1.8 with 1800 pistion
has it been done yet

any pros and cons

thanks
all

[MVTi Mark]

Check this site out http://www.rpw.com.au./New%20Website/MP001.htm

They specialise in that kind of thing and have a lot of experience with hyundai's - they are in Australia, but it should give you some ideas.

[Red_AGT]

There was a person who had his 97 Accent GT 1.5 L DOHC bored out to 1.7L a while back on a different forum.

This is the list of mods he had.

[body]Mods List

Block
Bored and stroked out to 1.7L
Higher compression pistons 11.7:1 (Forged)
Forged crank,Knife edged and shot peened
Billet rods
Billet wrist pins
Deburred water channels

Heads
5 angle valve job
Reshaped quench area
Portmatched to intake manifold and header
Hve cams
Stiffer springs
Billet valves
Titanium retainers
O-rings
Copper head gasket

Intake
Extrude honed
Bored throttle body
Home made CAI
K&N filter

Fuel
Tiburon fuel injectors

ECU&Ignition
MoTeC engine management
HKS plugs
NGK plug wires

Exhaust
Custom 2" exhaust
Tanabe racing medallion muffler
Thermo-tec header wrap

Clutch
Clutch masters custom carbon kevlar

Interior
Painted everything
Auto Meter monster tach
Razo shift knob
Neon pedal pads
Neon gauge lights
Neon under car kit

Audio
Kenwood KDC X817
Kenwood EQ
Alpine MRV-2100 amp(subs)
Kenwood 25 x 4 (mids and highs)
Boston Acoustics coaxials
Rockford Fosgate punch power 12" subs

Other
Window tint
Custom Paint(silver with blue pearl)
Some decals
Home made strut tower braces
PIAA platinum super white headlight bulbs
Xenon blue foglight bulbs
Hood pins
Headlight covers
Alumionum GT roof wing [/body]

I don't think he's on this board and don't know how to contact him.
He used to have a homepage, but its not there anymore.
I think he was pushing around 200hp or so.
Hope someone else will help you out more than I can. I don't think there is anyone who tried a 1.6L-1.8L project.

It might be better if you just swaped in a 1.8L Beta (Elantra or Tiburon) or 2.0L Beta(Elantra or Tiburon) engine in to your car.

[geo97accent105]

hey red, where can i get cams and cam gears for a 97 accent sohc, 1.5?and would either of the beta swaps work on my car?
thanks alot

[Red_AGT]

Hi geo97accent105.
Please try and refrain from replying to a topic and changing the subject of what is at hand.

If you would like to ask a questions about beta swaps, please read topics in the hybrid forum and then feel free to ask a question there. Yes you can do a beta swap on your car as you will find that there are many topics of that nature in that forum and a few members have done that swap.

As far as cams and cam gears, I'm not sure who sells them. Sorry I couldn't be of more help.

[skierd]

Originally posted by triniGT
[body]
was up all
want to start a project
over bore 1.6 L DOHC to 1.8 with 1800 pistion
has it been done yet

any pros and cons

thanks
all

[/body]

You most likely cant do it. There just isnt enough block material.

[BarMan]

just a problem i see about your idea 1.6L dohc have the Same block that the 1.5L

1.6L dohc are just a 1.5L with 1" more bore and 3" more strocke so stroke it to 1.7L oki maybe but to much like 1.8L the sleave will be thin and the engine will begin to be really week... yeah more torque and everything... but less Rpm... and weeker engine....

geo97accent105 for the Cam Gear our engine Sohc or dohc Have only one external Cam like some other Cars and not like honda.... so a adjustable Cam Gears will never Give you anything good cause hading at one place will instantly remove in other way... adjustable Cam on a Sohc on our Dohc wont give anything a lighter Cam gear maybe but adjustable.... No way ...

[skierd]

Originally posted by BarMan
[body]
just a problem i see about your idea 1.6L dohc have the Same block that the 1.5L

1.6L dohc are just a 1.5L with 1" more bore and 3" more strocke so stroke it to 1.7L oki maybe but to much like 1.8L the sleave will be thin and the engine will begin to be really week... yeah more torque and everything... but less Rpm... and weeker engine....


[/body]

Its 1mm and 3mm, not inches. Get your units right. The 1.6L Bore and stroke are only ~3.01" by ~3.4" respectively.

The 1.6L DOHC alpha3 uses a completely new block design from the 1.5L DOHC alpha2. The heads are basically the same though. Most likely, the 1.6L can be bored a maximum of 1mm over, but i'm not sure because i've never had the head off my engine. Hyunda sells 1mm oversize pistons, so I assume it can be done. If you bore out our engines, the geometry becomes more square, which means you can safely rev higher, seeing that our bore is a lot smaller than our stroke (by like 10mm, i cant get on webtech at work to check so I cant give exact #'s).

[cueriux]

Is bore a radius or a diameter?

[skierd]

diameter