Advice for 6bolt rebuild

[TurboTiger]

I have a spare 6 bolt motor for my 1g AWD that I'm rebuilding.
My plan is for a twin scroll BW (Borg Warner) S258 turbo.
30+psi of boost
500awhp

I've decided on Wiseco pistons, and eagle rods since the eagle stuff isn't terribly expensive.
I also want to o-ring the block since it'll be at the machine shop. I've been reading that I should stick with the stock composite head gasket if I'm going to O-ring the block. But I assume I can't if I overbore the block to .020 (if i need to)

I've also decided to use ARP head studs, but since there's two different ones with a big price difference, I'm not sure if I should use the more expensive L19 or not.

I'm also not sure if I should use ARP main studs, or re use the stock ones.

I'm also looking at the FP beehive springs with evo 9 retainers. I believe that'll be capable of spinning the motor to 8500 - 9000 rpms.

Is there anything else I'm missing or should consider?

 

[Freerevving]

L19's are re-useable

I measured a composite HG the other day, came out to be 86.5mm... good enough for a .060" overbore

 

[outkastracing]

you might consider a 4layer metal head gasket, you should go arp mains, and like said above the l-19 are able to be reused, have you looked at the bc spring and retainer kit lots of people are doing that kind of reving on these and there fairly inexpensive, thats what im running and love them, also what cams are you thinking is this going to be a track car or street and track. good luck!

 

[spooled_u_1st]

The arp mains are overkill plus you must get the block line honed.

 

[TurboTiger]

you might consider a 4layer metal head gasket, you should go arp mains, and like said above the l-19 are able to be reused, have you looked at the bc spring and retainer kit lots of people are doing that kind of reving on these and there fairly inexpensive, thats what im running and love them, also what cams are you thinking is this going to be a track car or street and track. good luck!

I understand that I don't want to run a 4 layer metal head gasket if I am o-ringing the block.

I did see the BC spring and retainer kit, and they are relatively inexpensive, and cheaper than the beehive springs. I'm not sure how high you can rev the BC spring & retainer kits.

I'm leaning toward the Kelford 272/272 cams right now.

 

[90laserRSfwd]

I didn't even know Kelford did any Mitsu stuff beyond the EVO's. Where did you find 272's for a 6 bolt? Are you using a 1g or 2g cylinder head? As for the ARP's, the L19's are perfect for your setup. Please explain why your not wanting to use a 4 layer head gasket (something with o ringing that doesn't make sense to me...

Why can't you just o ring the head, and use the 4 layer?

Couple other tips:

BSE kit, Fluidamper crank pulley, port the oil relief hole, and get the 1400 series forgings from Wiesco, not the standard ones.

 

[TurboTiger]

I didn't even know Kelford did any Mitsu stuff beyond the EVO's. Where did you find 272's for a 6 bolt? Are you using a 1g or 2g cylinder head? As for the ARP's, the L19's are perfect for your setup. Please explain why your not wanting to use a 4 layer head gasket (something with o ringing that doesn't make sense to me...

Why can't you just o ring the head, and use the 4 layer?

Couple other tips:

BSE kit, Fluidamper crank pulley, port the oil relief hole, and get the 1400 series forgings from Wiesco, not the standard ones.

I will be using a 1g head. O-ringing the block makes sense to me since heads warp. I've been reading once you o-ring the block, you just need a composite headgasket and you don't need a MLS one. You also don't need to finish the mating surfaces so smoothly like you do with a MLS HG.

BSE kit - I'll be getting one of those
Fluidampr crank pulley - that looks overkill, especially for the price. I'll probably skip that and just use the stock one.
Port the oil relief hole - Do I have to do this for 6 bolt engines?
Wiseco 1400hd pistons - Any drawbacks to these pistons vs. their standard ones? This is going to be a street car, not race only. I do want longevity out of this.

Kelford has cams for the DSM and evo 3. MAPerformance has it on their website.
Kelford RaceCams Camshafts (DSM) - Modern Automotive Performance

 

[90laserRSfwd]

I will be using a 1g head. O-ringing the block makes sense to me since heads warp. I've been reading once you o-ring the block, you just need a composite headgasket and you don't need a MLS one. You also don't need to finish the mating surfaces so smoothly like you do with a MLS HG.

BSE kit - I'll be getting one of those
Fluidampr crank pulley - that looks overkill, especially for the price. I'll probably skip that and just use the stock one.
Port the oil relief hole - Do I have to do this for 6 bolt engines?
Wiseco 1400hd pistons - Any drawbacks to these pistons vs. their standard ones? This is going to be a street car, not race only. I do want longevity out of this.

Kelford has cams for the DSM and evo 3. MAPerformance has it on their website.
Kelford RaceCams Camshafts (DSM) - Modern Automotive Performance

Your correct that the Fluidamper may be over kill. But your changing the harmonic's of the motor when you swap out the rods and pistons with ones of different gram weights and the location of the weight within the parts themselves. The Wiesco 1400 series were suggested more to be on the safe then sorry side. I'm not saying you NEED them, but it's not going to hurt to having things a little more over engineered then needed. Thanks for the link to the cams. I know a few people that run Kelford's in there EVO's and the cams are very very nice. Keep us updated with your progress.