which headgasket

[ktl]

A standard HG has blown after an open pit lane at brands

Running TD04 1.4bar forged but what HG to run ?

a athena 1.2mm or a 1.4mm ? As i think the head has been skimed twice already.

Thanks

 

[Skalabala]

be safe and use the 1.4mm
if performance drop then just up the boost a bit.
And lower CR will allow more aggressive mapping and maybe 30Hp nos?

 

[John@ECC]

Will have these in stock next week if you still need one, i would go for the 1.4mm.

 

[thefalls]

Before you venture into any type of headgasket i think you better do some research.

A thicker head gasket will lower the compression ratio but will allow for more boost and hence more power,but it will also make the engine lazy offboost.

First thing,you need to calculate the present compression ratio and then decide which head gasket to go for.

http://www.race-cars.net/calculators/compression_calculator.html

To have a good off boost response, you better stick close to stock comp ratio,thats 8.2:1

 

[ktl]

bump

 

[jayc-glanza17]

how bad it go eric???
also mate did it det whilst on track??

 

[ktl]

just pressurising big time, and nah didnt det that i know off.

 

[madman]

id personally 1.4 as the head has bein skimmed already

 

[ktl]

Argh,everyone opting the 1.4mm. I got a 1.2mm here now. Would it not work with the td04 1.4bar?

 

[madman]

a 1.2 will work she will be a bit more responsive lower down as already said its just if you go for more power in the future it could be your down fall if you get me.

 

[ktl]

a 1.2 will work she will be a bit more responsive lower down as already said its just if you go for more power in the future it could be your down fall if you get me.

Yeah i understand, hmmm tough decision as most likely will go for more power in the future hehe..

why i used a standard HG as i was only using a ct9 hybrid at the time.. thought i wasnt going for more lol.

 

[jayc-glanza17]

eric mate, go for a 1.9 athena HG, it mean u can go td05 which u were talking about before.

 

[starletgtturbo1]

i am running a trd one so is spuddy with super boost. its all in the tune/quality of fuel

 

[starletgtturbo1]

eric mate, go for a 1.9 athena HG, it mean u can go td05 which u were talking about before.

that would be pretty awful off boost

 

[ktl]

eric mate, go for a 1.9 athena HG, it mean u can go td05 which u were talking about before.

1.9 sounds very safe lol, but i dont think i'll go for the td05 route unless it was wepr hybrid unit.

 

[ktl]

i am running a trd one so is spuddy with super boost. its all in the tune/quality of fuel

trd = 0.6mm? what compression ratio are you left with ? And what pressure boost you running.

 

[starletgtturbo1]

yeah 0.6mm thats with 4age headbolts, but that wont make a difference. i was going for over 2 bar, runnning the engine in at 1 bar on a td04. cant remember the ratio il go calculate it but it is a 5e

 

[ktl]

So i could be safe to run more boost in the future depends on the mapper / fuel ? @ 1.2mm mls gasket

forgot to say im using dished -10cc pistons.

 

[starletgtturbo1]

its a tricky one mate, if i say yes and it fails due to shitty map or fuel you would blame me. thats why everyone elses answer is safe lol. with dished pistons and the head being skimmed twice( which will lower the compression more) you are probs better running 1.4mm. which would probibly work out nearer the same compresssion as a 1.2mm seeing as it has been skimmed

 

[ktl]

its a tricky one mate, if i say yes and it fails due to shitty map or fuel you would blame me. thats why everyone elses answer is safe lol. with dished pistons and the head being skimmed twice( which will lower the compression more) you are probs better running 1.4mm. which would probibly work out nearer 1.3-.2 seeing as it has been skimmed

Ok thanks for your help, and the others. Think i'll opt for the 1.4mm.