6bolt and 7bolt (4g64, 3g Eclipse)

[godfather4G64]

what is the dif between a 6bolt and 7bolt. i dont understand this shit at all.

 

[talondave]

Not much of a difference just that a 6 bolt takes 6bolt to bolt the flywheel to the crank and the 7 bolt takes 7 bolts. Also the 6 bolt 90-92.5 has 7.8-1 compression with stronger rods, and the 7 bolt 95-99 has 8.5-1 compression and weaker rods. Also the 6 bolt has bigger ports on the head then the 7 bolt.

 

[JEFFREYCASTGSX]

7-bolts dont necessarily have weaker rods there just lighter(which in turn means weaker). They have smaller ports but dont think they make less power.

 

[talondave]

7-bolts dont necessarily have weaker rods there just lighter(which in turn means weaker). They have smaller ports but dont think they make less power.

No man not saying less power just comparing!

 

[Oliver@Slowboy]

Not much of a difference just that a 6 bolt takes 6bolt to bolt the flywheel to the crank and the 7 bolt takes 7 bolts. Also the 6 bolt 90-92.5 has 7.8-1 compression with stronger rods, and the 7 bolt 95-99 has 8.5-1 compression and weaker rods. Also the 6 bolt has bigger ports on the head then the 7 bolt.

1g's have 7.8:1, 2g has 8.5:1 this is not a 6b 7b change. There are a lot of threads on here about this and VFAQ.com has a wealth of knowledge.

Oliver
[email protected]

 

[JEFFREYCASTGSX]

No man not saying less power just comparing!

I got you, i wasnt trying to correct you, just trying to let him know.

 

[dsm-onster]

7-bolts dont necessarily have weaker rods there just lighter(which in turn means weaker). They have smaller ports but dont think they make less power.

6bolt rods have taken more torque and horsepower than 7bolt rods.

 

[talondave]

1g's have 7.8:1, 2g has 8.5:1 this is not a 6b 7b change. There are a lot of threads on here about this and VFAQ.com has a wealth of knowledge.

Oliver
[email protected]

I know this! I just skiped the 1g 7b and just compared the 1g 6b to the 2g 7b.

 

[godfather4G64]

so according to all specs that i have seen about my car, i have approx a 9:1 comp ratio. i will soon be putting a turbo and dohc from a talon tsi onto my 4g64. since you all are more mitsu and dsm then others that i have asked, i was wondering if you knew how much boost i can run on my stock internals. ive been told between 7 and 15lbs.

also i have read about 6bolt and 7bolt 4g64. with out tearing my engine out, how do i find out.

 

[talondave]

so according to all specs that i have seen about my car, i have approx a 9:1 comp ratio. i will soon be putting a turbo and dohc from a talon tsi onto my 4g64. since you all are more mitsu and dsm then others that i have asked, i was wondering if you knew how much boost i can run on my stock internals. ive been told between 7 and 15lbs.

also i have read about 6bolt and 7bolt 4g64. with out tearing my engine out, how do i find out.

Not sure' but you should be able to find what your looking for under (search forums.)

 

[pneumo]

If you have a 6 bolt 2.4 engine, then the rods are plenty strong, but the pistons are the weak link. Be carefull of knock and you could push it over 10psi, but I'd start with low boost and tune it well. Then gradually turn up the boost when the logger says it's OK.

 

[godfather4G64]

cool thanks man.

how do i know if i have a 6bolt or a 7bolt 4g64. is there a specific enginecode or a site that i can check.

 

[MrBoxx]

You do realize that you have a 3rd generation Eclipse and NOT a DSM, so a lot of the information we give you may not apply to YOUR car. This site is NOT geared towards the 3rd generation Eclipses. Those cars have almost nothing in common with DSM's.

Please fill out your vehicle profile, so people don't accidentally give you information that doesn't pertain to your car.

 

[JEFFREYCASTGSX]

6bolt rods have taken more torque and horsepower than 7bolt rods.

Which is why i restated that the rods were weaker.