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Who has (or is doing) an NA-T on the forum?


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No probs mate, i have all the lines now for feed and drain i did get a 45 degree fitting for the sump aswell :)

 

Just cant seem to find a flange to fit the sump, if you could find a link that be great :)

 

I have seen the sump flange on Whifbitz but was hoping to find one a little cheaper than that really

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Just noticed that 45 degree bit with that flange is an-8 so ill have to buy a 1/2 npt to an-10 adaptor for it :)

 

Yer i have turbo and manifold kit now came yesterday :)

 

All i have left to buy is a clutch kit & need to sort the injector resistor pack business out

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the size of the wastegate doesn't refer to it's fitment. the 4 bolt is the typical NA manifold setup. Id go with a 4 bolt to vband and get a 50mm on there.

 

a lot of people go HKS copy. Ashley W the yellow drift monster and mine have had boost issues due to the HKS copy wastegate being too small.

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My wastegate is a 50mm no dea if it's a copy, it's xs power so probably cheap. Just a four bolt fit the the lower manifold

 

I measure the hole on the manifold flange and its 43mm on mine, gasket is the same so surely i wouldnt be able to use a bigger wastegate than the hole?

 

Think im going to have it cut off and vbands welded on

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Go 50 or 60 mm , means you'll never have to worry about boost creep where the smaller waste gates are unable to bypass enough to stop the turbo spooling beyond the boost level you've set it for

The v-band 60mm hks copy waste gate is used by a lot if na-t guys

(Including myself) and works very well

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Ill go for one of those then i think

Do you have a link on where to buy them or are they on our famous auction site?

 

Spose i will need a larger diameter screamer pipe now to use a 60mm wastegate or will the xspower one i have be ok?

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At my first mapping session Dan told me the crank position sensor was iffy, so I swapped the distributer for another with less miles under it's belt.

 

However, he tells me this ones not up to the job either.

 

It appears that after almost 20 years these sensors are happy with stock N/A yet aren't up to dealing with the precision required with boosted tuning.

 

Bottom line is, if you want more than 300 bhp, you'll most likely need a new distributer and it would prove more economical to fit one before you've shelled out for a session on the rollers, only to learn that you need to shell it out again after fitting a new one.

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At my first mapping session Dan told me the crank position sensor was iffy, so I swapped the distributer for another with less miles under it's belt.

 

However, he tells me this ones not up to the job either.

 

It appears that after almost 20 years these sensors are happy with stock N/A yet aren't up to dealing with the precision required with boosted tuning.

 

Bottom line is, if you want more than 300 bhp, you'll most likely need a new distributer and it would prove more economical to fit one before you've shelled out for a session on the rollers, only to learn that you need to shell it out again after fitting a new one.

 

'Most likely' need a new one. This isn't 100% the case all the time though. It may cause a problem, but it may not.

 

You can't renew everything that might cause a problem on the rollers. Sadly your just have to suck it and see.

 

A 7psi spring with a boost controller allowing double the spring pressure, say 14psi should get your 400hp as long as nothing else is wrong. The psi to hit your goal will depend on many variables.

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  • 2 weeks later...

what should I be looking for when it comes to AFR numbers? I have all these new shiny gauges but don't know how to read them..?

 

what im getting is 12.9 @ 1200rpm cold start idle then 14.6 - 15 @ 950rpm warm, its hard to see what its doing @ WOT

 

also I saw 0.6 0.7 on my tru boost gauge / controller but then at one point im sure it got to 1.1 has this got something to do with my dodgy wastegate? it has the 7psi spring and the aem tru boost has been set up.

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AFR's should idle at 14.7. Cold start will see it rich up which is why your seeing around 13. I usually see around 12.

 

On WOT you want to see around 12-13 depending on your tune. I would of thought being high compression, your be as close to 12 maybe even 11.

 

The wastegate should allow for a stable output. Fluctuation may occur if it's not big enough. This should only happen in the higher end of the RPM range though, smaller wastegate wont allow enough gas to exhaust therefore creating more boost than the spring allows. Lower than 5.5k I'd say you have something to look into if you hit 1.1bar. Mines setup to be mapped at that, and I don't hit 1bar until around 5.5k

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