TRS TA Performance Cylinder heads

JP. · Post by **JP.** » Thu Feb 05, 2015 4:59 pm

So the swap from 4 barrel carb & Merlin heads to 8 stack Jernvey's & TA heads is at least worth 40bhp. Twice the carb & TA heads basically.

Makes me wonder how much worth where the TA heads alone over the Merlin heads, is it worth the investment.

Or is it twice the fuelling ( 8 stack versus 4 barrel carb ) and better fuel/ignition management that makes the bhp.

Btw great results so far

kokkolanpoika · Post by **kokkolanpoika** » Thu Feb 05, 2015 5:10 pm

No more than 426hp..

mgbv8 · Post by **mgbv8** » Thu Feb 05, 2015 7:43 pm

Still waiting

BISH V8 · Post by **BISH V8** » Thu Feb 05, 2015 8:19 pm

Just been told the news.......429 bhp .........

mgbloke · Post by **mgbloke** » Thu Feb 05, 2015 10:28 pm

yes sorry had a busy night.

429bhp @6500 rpm. Haven't seen the printout yet. They still have cold start and warmup settings to finish.

It makes more at the wheels now than it made at the flywheel before.

Cant wait to drive it.

Mark

mgbloke · Post by **mgbloke** » Thu Feb 05, 2015 10:30 pm

Un ported just cleaned up castings.

Blown v8 · Post by **Blown v8** » Fri Feb 06, 2015 5:34 am

Wow,
That's good figures,very impressive

chodjinn · Post by **chodjinn** » Fri Feb 06, 2015 7:23 am

Crikey, that is gonna go some on the track!

DaveEFI · Post by **DaveEFI** » Fri Feb 06, 2015 10:01 am

Be interesting to see some curves. Would help decide what is the best value for a road car?

Spongo · Post by **Spongo** » Fri Feb 06, 2015 11:18 am

Thats 29 more than my car and I have a 6.3L Chevy engine, just shows how lowly stressed the big American engines are.

That is going to be a seriously quick bit of kit once you get it dialled in.

SimpleSimon · Post by **SimpleSimon** » Fri Feb 06, 2015 1:18 pm

mgbloke wrote:yes sorry had a busy night.

429bhp @6500 rpm. Haven't seen the printout yet. They still have cold start and warmup settings to finish.

It makes more at the wheels now than it made at the flywheel before.

Cant wait to drive it.

Mark

Well done, nice

JP. · Post by **JP.** » Fri Feb 06, 2015 3:40 pm

a 100bhp increase, wow that's impressive.
Like to see both dyno sheets together.
Merlin heads & TA heads.

Blown v8 · Post by **Blown v8** » Fri Feb 06, 2015 4:02 pm

A good advert for TRS

looking forward to getting mine on the rollers,

mgbloke · Post by **mgbloke** » Fri Feb 06, 2015 4:18 pm

I will post the dyno sheet when I have it.
been told that it is quite cammy and really takes off at the top end.
retains similar mid range torque but lost a bit at the bottom.

Restricting factors might be 45mm throttle bodies and 2.5 inch exhaust system.

I think that is enough power for such a small light car. (for now).

Spongo · Post by **Spongo** » Fri Feb 06, 2015 4:44 pm

Mmmmmm the words POWER and ENOUGH in the same sentance........ sorry does not compute