Ole

Just installed my Greddy. I tightened up the WG a bit to get rid of the rattle and it spools nice! However, I only het about 3 psi? Any tips?

After a little drag i pulled over and while the car was running i looked at the turbo.. It was glowing! Is it normal that the turbo glows under normal driving?

Mimime

iTrader: (1)

You really should get that check out...! ITS NOT NORMAL!

Are you sure the turbo is getting LUB?Oiled?

magnamx-5

iTrader: (7)

depends on how much you are retarding timming and overfueling it. the 3 psi could be a leak of some sort check the connections. glowing turbo is no problem tubro glowing and going ping ping ping screeech is bad

bripab007

It's not uncommon for turbos to glow when pushed...but, at 3 PSI, it would seem something is not right.

jwarriner

Things sometimes get nearly as hot with too much fuel and not enough timing as they do with too little fuel and too much timing.

Braineack

iTrader: (62)

For the first part, I would suggest you aren't boosting only 3psi with a tightened wastegate rod (most likely not less than 5psi even without a tigthened rod). So I suggest your boost gauge is inaccurate.

A glowing turbo means EGTs are high, do a quick google search as what can cause high EGTs. Improper fueling & timing advance would be my first thought.

jayc72

iTrader: (14)

Plugged cat.

Ole

I am running vortec pressure regulator from the kit, and 6 degrees on the ignition. manybe i should make it 8 degrees and try? my a/f says stoich almost all the time under wot. and lean for a sec or two at about 4k rpm..

jwarriner

I would figure out the culprit in the 3psi issue and then move onto timing.

Ole

I have a brand new JR BOOST gauge.. can at be broken? :( By the way, i'm not having any cat.

1991BRG

Are you using a wideband or narrowband for your air/fuel?

jayc72

iTrader: (14)

Reconfirm your timing. Double check you exhaust for some kind of blockage.

UofACATS

iTrader: (1)

Well, that's not good.

What wideband are you using?



Retarding timing too much is one common factor that can result in a glowing-hot turbo.

UofACATS

iTrader: (1)

I don't like cat either.

Ben

iTrader: (33)

Well there's one of your problems...

miataspeed1point6

iTrader: (1)

In this thread https://www.miataturbo.net/forums/sh...?t=2995&page=2 you said there was no oil supply hole in your euro block. What did you end up doing? Have you made sure that your turbo is getting oil? I would imagine after a hard run with no oil your turbo would glow...

What octane fuel are you using? It sounds like your fuel/timing are off somewhere. Did you make sure to jump the ten and grd when you adjusted your timing?

jwarriner

I think the turbo would fail before a lack of oil caused the turbine to glow from friction.

Have you checked for a boost leak?

cjernigan

iTrader: (13)

If the turbo had no oil it would have worn the brass journal bearings alot already and you would have massive shaft play which could lead to the wheels touching the housings which would be very notice able.
I say it's due to you running lean considering you're stoich even under boost.

Ole

I have only a narrowband.. :( oil is coming from the oil pressure sender.. I set the timing as described in the manual yes.. but i will look at the ignition today, and lower the boost.. and maybe check the mounting of the vortec?

rmcelwee

iTrader: (1)

My glowing turbo was due to a lack of fuel at 18 psi on a tiny turbo:

http://www.youtube.com/watch?v=HhOSOAJqsdU