Bastard 20G + TD06SL2

[AllanL]

Currently happy w a Bastard 20G. Been toying with the idea of a bastard 20g cold side with a stock 070 ported to fit a TD06SL2 hotside. Any thoughts? Any needed add ons prior to running this set up? Thanks.

 

[007jimmy]

I say go for it. The turbine upgrade would definetly get more flow out of the compressor. What fuel mods you have??

 

[AllanL]

Basically running an Evo3 engine, ECU, self tuned using Tunerpro.

 

[007jimmy]

The 510cc injectors and your stock fuel pump would not be good enough tho utilize the potential of the turbo. You have a way to tune so i would look to upgrade the fuel system. The turbine upgrade alone will basically give you a little more lag.

 

[AllanL]

i see.
how much of a fuel system upgrade shoudl i be looking at? how much injector cc and how big pump lph?
thanks for your time...

 

[007jimmy]

For the injectors i would say at least 750cc. As for the pump you could use a 255lph but you would need a AFPR. Otherwise a evo 9 or 190lph pump would work. Be sure to rewire the pump to give it proper voltage. If you plan on boosting over 20psi the stock 7 bolt headstuds will start to stretch and you could blow your headgasket, so ARP headstuds are a must at least. That turbo really wakes up at 20+ psi so keep this in mind.

 

[JusMX141]

This will be an expensive and completely-useless venture unless you're really wringing that 20G for all it's worth using the current TD05H turbine configuration.

Upgrading the turbine will not necessarily lead directly to more power being made. In fact, many turbine upgrades delay boost enough that the car may feel slower as you're losing that torquey "hit" that is synonymous with TD05H turbos. If you're at a point where you're seeing airflow taper off short of what a 20G compressor is rated no matter what boost level you're running, then perhaps you should consider a turbine upgrade...otherwise there are much better things to spend $300 on.

 

[DSMTyson]

The TD06SL2 turbine still hits hard, it just spools a little bit later. Its a good medium between the TD05H and TD06H turbine wheels.

But I pretty much agree with what Justin said.

I'm running a TD05H bastard 20G. Unless you are going to be completely pushing the turbo to its limits, I don't see a reason to waste your money.

 

[AllanL]

justin,

two questions...

you mentioned in another thread that the 06sl2 would be good in a bored out 6cm^2 ...why exactly is this?

http://www.dsmtuners.com/forums/dyno-talk/421158-20g-td06-hp-record-2.html#post152850127

if i were to redo the bastard 20g all over again, would the 06sl2 be better than the td05h as a turbine wheel?

 

[JusMX141]

you mentioned in another thread that the 06sl2 would be good in a bored out 6cm^2 ...why exactly is this?

http://www.dsmtuners.com/forums/dyno-talk/421158-20g-td06-hp-record-2.html#post152850127

Wrong- I stated the TD06H turbine (67.2mm/58.8mm) may work well with the 6cm housing...I said nothing about a SL2 wheel (61mm/54mm) .

if i were to redo the bastard 20g all over again, would the 06sl2 be better than the td05h as a turbine wheel?

There is no right or wrong answer to this. Refer to post #7.

 

[AllanL]

my bad...

so a larger turbine in a smaller space?

 

[AllanL]

Wrong- I stated the TD06H turbine (67.2mm/58.8mm) may work well with the 6cm housing...I said nothing about a SL2 wheel (61mm/54mm) .

can you elaborate more on this please?
thanks.

 

[JusMX141]

Exactly what information are you looking for while bumping your thread which is against the rules?

 

[AllanL]

sorry about that...
was wondering how a 6cm^2 housing with a TD06H might be better, based on your information...
couldn't get it if you were meaning to compare the 6cm^2 with the 7^cm2...

A TD05H turbine is a little on the small side for max power output on a 20G due to the backpressure but it's great for torque because of the quick response and how the power comes on hard before 5252rpms where torque and HP plots on the graph cross.

For max horsepower with the TD06H turbine, the turbine housing choice doesn't really matter. Consider the fact that the older FP Red made big airflow numbers with a clipped TD06H turbine in a 7cm turbine housing, so obviously a TD06H turbine should handle everything that a 20G compressor can throw at it. In fact, a ported 6cm housing machined to accept a TD06H turbine could be the hot ticket for a 20G compressor concerning both spool and airflow if you're lucky enough to find one that isn't all cracked to shit.

 

[JusMX141]

Simply because you're benefiting from the better flow that the TD06H turbine offers while keeping the spool as quick as possible due to the size of the nozzle area as well as the angle at which the airflow enters the turbine which the 6cm housing offers over the 7. Not many have done this, mainly because finding a crack-free 6cm housing worth modifying is damn-near impossible.