GalantVR4.org The Mitsubishi Galant VR-4 Forum
Galant VR-4 Forums » Galant VR-4 » Technical Discussions » 4G63 DOHC rebuild for free runners
Previous thread Next thread

4G63 DOHC rebuild for free runners


zzrblacklady
Junior Member


Galant VR-4 org Post #: 1054040 posted 02/29/12 06:03 PM     Remind Me!  Send Private Message   Edit Post      
Hi all,
wanted to know if anyone has ever converted a 4G63 DOHC for free runner?

The 4G63 SOHC is one, I know from experience.
Belt has been broken, and 2h work later he runs again without problems.
I just do not know if it was by the piston valve pockets or by the distance of the pistons and valves.

Now my question: Is it for the 4G63 DOHC pistons with valve pockets, so this gets a freewheel?

I am grateful for feedback,
regards ZZR-Blacklady

Posts: 25 | From: 78736-Harthausen, Germany | Member Since: 01/14/12 | IP: (80.143.99.93) | Report this post to a Moderator

belize1334
well bread and nobly conceived
1334/2000


Galant VR-4 org Post #: 1054050 posted 02/29/12 06:40 PM     Remind Me!  Send Private Message   Edit Post      
Are you referring to interference vs. non-interference engines? I don't believe it's possible to build a non-interference 4g63. If you break your timing belt, valves and pistons WILL collide.



Roger B. Scott
'91 Belize Green

Posts: 3312 | From: Dundee, Scotland, UK | Member Since: 11/18/03 | IP: (153.90.194.143) | Report this post to a Moderator

fuel
"Just to be pedantic!"


Galant VR-4 org Post #: 1054065 posted 02/29/12 07:08 PM     Remind Me!  Send Private Message   Edit Post      
A short answer is NO.

With the compact pent-roof combustion chamber, larger total valve area and lift of the valves there just isn't enough room for the open valves to occupy a space when the piston is at TDC.

The best thing to do is just make sure your timing belt is changed at its intended intervals - usually it's 100,000kms (62,000mi) or every 5-10 years.

Of all the interference engines I have owned, I have never had a timing belt snap on me purely because I carry out the maintenance when it is required.



'91 E39A Galant VR-4 Evolution | '80 A164A Eterna GSR Turbo

-- Visit my JDM Galant VR-4 info & specifications site here! --

Posts: 2149 | From: Toronto, ON, Canada | Member Since: 02/23/09 | IP: (122.104.129.55) | Report this post to a Moderator

iceman69510 Galant VR4.org Moderator
Turn Right Racing
855/2000


Galant VR-4 org Post #: 1054101 posted 02/29/12 09:43 PM     Remind Me!  Send Private Message   Edit Post      
Sure you can do it. Get really, really low compression pistons and some short rods. That'll clear the valves.



91 VR4 855 Nile Black
92 VR4 828 Belize Green-SOLD
91 VR4 115 Nile Black -SOLD

Posts: 10748 | From: Michigan | Member Since: 03/05/01 | IP: (50.45.74.82) | Report this post to a Moderator

zzrblacklady
Junior Member


Galant VR-4 org Post #: 1054550 posted 03/03/12 02:52 AM     Remind Me!  Send Private Message   Edit Post   
Hi guys,
Thanks for the replies, I do not have "4G63DOHC engine / cylinder head" disassembled, so my question.
So thank you again for the replies, I will regularly check and change the timing belt,
regards Holger

Posts: 25 | From: 78736-Harthausen, Germany | Member Since: 01/14/12 | IP: (84.158.179.17) | Report this post to a Moderator


Pages: 1
Previous thread Next thread

Extra information
0 registered and 14 anonymous users are browsing this forum.

Galant VR4.org Moderator:  curtis, steve, atc250r, jcgalntvr4-244, cheekychimp, jepherz, Rausch, toybreaker, iceman69510, pot, FlyingEagle 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 3679

Rate this thread


News & Events: News | Events
Galant VR-4: Newbies | General VR4 Discussions | Technical Discussions | How To and Info Archive
Marketplace: Parts For Sale | Cars For Sale | Good Guys | Bad Guys
Community: Members' Showcase

Contact Us | Privacy statement GalantVR-4.org

Generated in 0.163 seconds in which 0.142 seconds were spent on a total of 14 queries. Turbo powered.


Hertz's Galant VR-4 Page