FRS300 Rebuild Has Begun..Blown Motor to Built Monster

[Synack]

Originally Posted by King Tut

I was not aware of anyone running a motor with lower compression pistons yet. I think there was a guy in Texas with an Accelerated kit that was putting pistons in, but I haven't seen him post recently. Full Blown is waiting to blow theirs up to install pistons. I have definitely considered just swapping in lower compression pistsons and rods to get some more power.

Talking about me? I have a D3 Performance kit. I just moved from Houston to Atlanta though.

[King Tut]

Originally Posted by Synack

Talking about me? I have a D3 Performance kit. I just moved from Houston to Atlanta though.

Nope. Talking about the guy that posted a few posts ago.

[Blue86]

Originally Posted by King Tut

Nope. Talking about the guy that posted a few posts ago.

"my son is also named Bort"

[bakerr6]

Originally Posted by cf6mech

Dons kit is advertised as retaining stock cat for emissions,...when he went to higher hp numbers he doesn't state if it is still retained......guess we found out otherwise.....but yah it went south. No biggie, time for upgrades without it. Still working out bugs and breaking new ground,....kind of why I keep to myself on build.....the wise cracks from others un-boosted......once you reach close to 400whp this car is a little unsettling unless your going in a straight line or a drifter, not my cup of tea....working on that solution now.....later!

Hey cf6mech, I'd still like to find out a little mroe about your build. I know you've kept it quiet for obvious reasons, but I've been watching the little info. you've put out here and there.

[Frs300]

@FA20Club.com any updates?

[FA20Club.com]

more pics tomorrow for you

[Frs300]

Originally Posted by FA20Club.com

more pics tomorrow for you

cant wait!!!!

[SkullWorks]

Originally Posted by cf6mech

Engines fine,...the cat that is retained in Accelerated Performance kit crapped itself into the turbine wheel destroying tolerances/the turbo,....upgrading to a Garrett GTX-R turbo minus the cat now,.....and yes besides Crawford and the Robert Stout race team car, mine is the only forged FA20 that I know of. 18 psi boost. Latest upgrade was Drive Shaft Shop axles that are rated up to 500hp.

That is unfortunate, I mentioned this to Don on the day he debuted the setup and he said I was uninformed and that that was very common, even tried to tell me OEM's did it all the time...Im sorry someone else had to learn that lesson for him.

[sw20kosh]

Looks like I will not be having any cat in between the motor and the turbo...

[Draco-REX]

I don't think the cat just spontaneously broke up on its own. Likely it was impacted by pieces of the engine. So whether it was pieces of the cat or pieces of the engine, that turbo was doomed regardless.

[FRSPirate]

Originally Posted by Draco-REX

I don't think the cat just spontaneously broke up on its own. Likely it was impacted by pieces of the engine. So whether it was pieces of the cat or pieces of the engine, that turbo was doomed regardless.

Originally Posted by cf6mech

Engines fine,...the cat that is retained in Accelerated Performance kit crapped itself into the turbine wheel destroying tolerances/the turbo,....upgrading to a Garrett GTX-R turbo minus the cat now,.....and yes besides Crawford and the Robert Stout race team car, mine is the only forged FA20 that I know of. 18 psi boost. Latest upgrade was Drive Shaft Shop axles that are rated up to 500hp.

^This

[buditjoenawan]

Originally Posted by Draco-REX

I don't think the cat just spontaneously broke up on its own. Likely it was impacted by pieces of the engine. So whether it was pieces of the cat or pieces of the engine, that turbo was doomed regardless.

Not to derail the original thread too much, but I just had to chime in regarding catalytic converters before the turbocharger. It is a TERRIBLE idea. So terrible, in fact, that Subaru STOPPED doing that after the 2003 WRX. @cf6mech's motor is fine, but his turbocharger is destroyed due to debris from the catalytic converter. At least that's how I understood the situation.

That said, please think twice about putting a turbocharger right after the stock header. ESPECIALLY that cat which isn't rated to withstand the kinds of heat a turbocharged setup produces.

Budi

[Draco-REX]

Originally Posted by buditjoenawan

Not to derail the original thread too much, but I just had to chime in regarding catalytic converters before the turbocharger. It is a TERRIBLE idea. So terrible, in fact, that Subaru STOPPED doing that after the 2003 WRX. @cf6mech's motor is fine, but his turbocharger is destroyed due to debris from the catalytic converter. At least that's how I understood the situation.

That said, please think twice about putting a turbocharger right after the stock header. ESPECIALLY that cat which isn't rated to withstand the kinds of heat a turbocharged setup produces.

Budi

Ok, I was confused. I thought it was FRS300 that lost the aforementioned turbo (I still expect he did).

The up-pipe cat in the WRX wasn't really an issue. Lots of people were worried about it, but I don't recall any actually coming apart. The cat Subaru used was designed with a metal structure that didn't break apart. Check out any thread about gutting the up-pipe and it's pretty clear that unlike conventional cats which can be fractured and removed, it has to be dug out.

Subaru stopped using them when they went to the 2.5L. Despite the larger displacement, they were able to reduce emissions such that they could remove that cat and gain a little power. The 2.5L WRXs were underrated.

[Frs300]

Originally Posted by Draco-REX

Ok, I was confused. I thought it was FRS300 that lost the aforementioned turbo (I still expect he did).

I hope not

If i did im driving it back without a turbo. but i havent heard if the turbo was good or bad yet.