6 bolt vs. 7 bolt [merged] 6bolt 7bolt 6-bolt 7-bolt six bolt seven bolt

[asdfzxc]

All 6 bolt vs. 7 bolt threads are merged here.
How do I tell if I have a 6 bolt or a 7 bolt?
Will x part from a 6 bolt fit a 7 bolt?
Will x part from a 7 bolt fit a 6 bolt?
Which one is better?
How do I swap my x bolt for an x bolt?

What is the difference between 6-bolt and 7-bolt engines (aside from the obvious - 6 vs. 7 bolts connecting the flywheel )

Is there an advantage over either of the two engines?

Thanks,

-Mike

 

[About2Bturbo'd]

also....i have a '98 Eclipse RS....is that a 420a or 4g63?

 

[*97GS_Eclipse*]

Its a 420a. A 6-bolt is used in place of the 7-bolt because it has less of chance of developing crankwalk.


Luke

 

[reese]

6 bolt is pre either may or march of 1992....i think march....everything else is 7 bolt....at least for the 4g63

 

[evotuner]

Are there any differences between a 1G 6bolt and 7bolt head, or are they interchangeable? Please help me out, but don't guess!
Thanks

 

[dave99gst]

i assoume you mean .. 6/7bolt but both 1g ? if so then no. if you mean 1g/2g then yes there differant.

 

[g0tEclipseD]

I have a 1992 Eclipse GST. The sticker with curb weight, vin etc says production date was July 1991.

Do i have a 6 bolt or a 7 bolt. If its a 7 bolt, what drawbacks will I have with modding and is there a possibility of crank walk on a 1g 7 bolt?

thx

 

[Defiant]

6, and not enough to worry about.

http://vfaq.com/mods/early-late-engine.html

 

[VexRacing]

I was having an oil leaking problem on my gst and it turned out to be the valve cover was cracked. So I went to napa to get the gasket and I go to put it on and it was the wrong gasket. so I swing back to napa and double checked it, so I asked for a 91 gst gasket and it was the right one. I would think that all the turbo motors would be the same but is this a way to tell if its the 6 bolt. I bought the car and no one knew anything about it. What are the signs that a 6 bolt was swapped. Let me know it would be pretty nice if it had one already. Thanks

 

[Defiant]

http://vfaq.com/mods/early-late-engine.html

 

[domino]

My engine doesn't look like the one in my friends GS-T (its a 95 tsi)

can anyone post a pic of a 6bolt engine beside a 7bolt... im trying to see the differences to find out if maybe i got lucky

 

[clownface]

the 6 and 7 bolt look the same only difference you can see on the ouside is the oil pan, i think, post sum pictures

 

[Defiant]

http://vfaq.com/mods/early-late-engine.html

 

[switch]

Are the redtop 4g63s 6 or 7 bolts ?? do they crankwalk?

 

[awdsm drft]

I doubt there are any 7 bolt motors that are from japan and would swap into our cars.

My jdm motor is a 6 bolt and its from a galant vr4 i believe. The only way the swap is worth the money over buying a rebuilt u.s. spec motor is if you get a motor with a 16g turbo. So if you buy one make SURE you are getting a 16g turbo. I didn't so i ended up with a 13g, needless to say i kept the 14b on.

 

[eltracer]

I was browsing for parts on a dsm website and It said 94 eclipse/talons were 7bolts. Is this correct? I know its such a newbie question but just want to know sawp in a block from a 90-93 dsm without any modifications.

 

[Herbal Essences]

Yep, you are a 7 bolt. I will look for a guide to the swap.

 

[eltracer]

so could I use The block of a 2g turbo for a direct bolt on?

 

[Herbal Essences]

Go here http://www.magnusmotorsports.com/1g2g.asp for all of your questions. Glad to help.

 

[eltracer]

Just asking these questions because my block just died. The mechanic says my heads alright but the block if gone. Kind of sucks just got the car 2 months ago with 92thousand miles on it....

 

[Herbal Essences]

That sucks man, I am sorry. My 91 only has 72,000 miles on it, and still running strong.

 

[eltracer]

Yea its so weird it was running so damn nice the whole time I had it. Just one moring went to fire it up and I got a nasty noise from the engine went to dire it to the mechanics and my oil pressure was really low and it started to over heat quick. I almost cried....

 

[cxx]

Here's a pic of a EDM 4G63 N/T. Can you tell me, whether it is a 6 or a 7 bolt? I count like 8 bolts, but I'm a little confused:

You must be logged in to view this image or video.

 

[TurBoGs-T]

Picture isn't working. Never heard of an 8 bolt.

 

[cxx]

fixed

 

[dave99gst]

I count 2 bolts cant tell form that pic , you are counting in the right area ? ( were the 2 bolts are sticking out on the left side of the pic )