Jump to content
SAU Community

Recommended Posts

Just a quick question.

If i get an engine rebuild with all the internals done like pistons head work etc and the stock turbo rebuilt if for some reason i have to go threw regency will they pick up on this at all?

Would they be able to tell whats been done to the motor and turbo seeing as will still look ''stock''?

Just a quick question.

If i get an engine rebuild with all the internals done like pistons head work etc and the stock turbo rebuilt if for some reason i have to go threw regency will they pick up on this at all?

Would they be able to tell whats been done to the motor and turbo seeing as will still look ''stock''?

If you change the cams, they'll be able to notice it by the idle, if not the emissions (if they do an emissions test that is).

Stock turbos rebuilt with steel wheels will be undetectable if theyre in the stock turbo housing however you wont be able to have a boost controller fitted as that is a defectable mod.

Depends on how stock you go - obviously getting new gaskets, seals, springs, forged internals etc are just replacement parts but if they suspect you've worked the engine they can quite easily suggest an emissions test - and lumpy cams are a dead giveaway

-D

Just a quick question.

If i get an engine rebuild with all the internals done like pistons head work etc and the stock turbo rebuilt if for some reason i have to go threw regency will they pick up on this at all?

Would they be able to tell whats been done to the motor and turbo seeing as will still look ''stock''?

I had a rebuilt rb25det and a highflowed gcg turbo. Now the turbo looked brand new as it had been sandblasted, I made sure to remove the GCG logo and just told the guy it was rebuilt to standard specs.

As far as the motor theres no way in hell they are going to know if its got forged pistons or not, I know they couldn't tell with me.

If you change the cams, they'll be able to notice it by the idle, if not the emissions (if they do an emissions test that is).

- and lumpy cams are a dead giveaway

-D

im running cams with a lumpy idle and i didn't have a problem at all when i went through regency

im running cams with a lumpy idle and i didn't have a problem at all when i went through regency

Guess you were lucky then dude... knowing regency, I wouldnt give them the rope to hang me with...

Also, a customer of my mechanics had a very lumpy cam put into his commodore - 3 weeks later he was defected because the police officer suspected modification (due to the idle creep) and sent him down to regency who then told him he could only keep the cams if it passes the emissions test.

No idea if he had the test done as I've heard that emissions tests arent cheap - just think its something to be wary of.

Like Damo said tho, they wont strip ur engine apart to see whats in it, but its really not hard to chuck a gas analyzer on the exhaust and see how its running...

-D

Guess you were lucky then dude... knowing regency, I wouldnt give them the rope to hang me with...

Also, a customer of my mechanics had a very lumpy cam put into his commodore - 3 weeks later he was defected because the police officer suspected modification (due to the idle creep) and sent him down to regency who then told him he could only keep the cams if it passes the emissions test.

No idea if he had the test done as I've heard that emissions tests arent cheap - just think its something to be wary of.

Like Damo said tho, they wont strip ur engine apart to see whats in it, but its really not hard to chuck a gas analyzer on the exhaust and see how its running...

-D

hmm ok but what do u mean by throwing a gas analyzer on the exhaust to see how its running? high emmisions from the cam? :S

hmm ok but what do u mean by throwing a gas analyzer on the exhaust to see how its running? high emmisions from the cam? :S

well im not a mechanic, but from what i understand, modding the cams changes the efficiency curve, ie it might burn richer at lower rpms but be geared for upper end power...

each car has a certain emissions target due to the standards of the day, and so regency sometimes use this as an excuse

a gas analyzer will not only tell the air fuel ratio but how many hydrocarbons are being generated and what type they are - again I don't know the details but like the others have said, forged internals will be fine - its more cam and ignition timing that changes the efficiency of the engine under certain conditions

this bloke with the v8 was pretty pissed off cause changing cams on his particular engine wasn't anywhere near as easy as doing a DOHC engine like an RB

-D

well im not a mechanic, but from what i understand, modding the cams changes the efficiency curve, ie it might burn richer at lower rpms but be geared for upper end power...

each car has a certain emissions target due to the standards of the day, and so regency sometimes use this as an excuse

a gas analyzer will not only tell the air fuel ratio but how many hydrocarbons are being generated and what type they are - again I don't know the details but like the others have said, forged internals will be fine - its more cam and ignition timing that changes the efficiency of the engine under certain conditions

this bloke with the v8 was pretty pissed off cause changing cams on his particular engine wasn't anywhere near as easy as doing a DOHC engine like an RB

-D

Regency don't do the emission test themselves so i dont think you really need to worry about it. my car passed and it idles at 1000rpm when it should only be 600rpm or so. If you fit a standard exhaust they wont be able to notice as easily.

a gas analyzer will not only tell the air fuel ratio but how many hydrocarbons are being generated and what type they are - again I don't know the details but like the others have said, forged internals will be fine - its more cam and ignition timing that changes the efficiency of the engine under certain conditions

Depending on the type of the piston used the dome design might lower/raise compression, it might also change the burn characteristics so that you get different emissions.

Most workshops will dodge something up for you though as they know regency will only check if the values are absurd.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Scenic roads, stunning skylines, and Chickos to finish it off! Join SAU NSW as we cruise through the Royal National Park and along Lawrence Hargrave Drive to Figtree! Sunday 26th October 2025 4:30PM Meeting Waterfall Station Parking 5:00PM Cruise Departure Royal National Park > Lawrence Hargrave Dr > Memorial Dr > Sid Parrish Park 6:15PM Arrival at Sid Parrish Park Figtree Meet Location: Waterfall Station Parking Final Destination: Sid Parrish Park RSVP: https://forms.gle/E4s5SiRKQfDdypky8 *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • It's funny, as Ive seen plenty of people use them in cheap builds on YT. And they actually go okay, even though a lot of other maxspeedingrods stuff is terrible. Those turbos seem reliable enough, the only part being, a good quality turbo that is "identical" to it, will out perform it day in and day out. In both a lower boost threshold, and the ability to flow more air at the same boost pressure. As a cheap cheap replacement, not a terrible choice. For cheap and shouldn't blow in a day, not terrible (like other eBay/Temu turbos) for low cost and still decent performance, that's where the question comes in to play from the results I've seen. I'd actually find it hilarious to buy one, and strap it to a paddock basher or some other cheap as POS originally NA car, and send it to the moon!
    • The maxpeedingrods turbo is cheap and bolts on to stock parts. I think you just need a bigger silicone coupler for the intake. Its a cheap china turbo, but it's been running on mine for almost 3 years at 16-19 psi.
    • What do they look like right after you've tried to start it with everything connected? Also post photos of what they actually look like.
    • Also wanted to say, my new spark plugs are blackened looks like it's very rich. I have splitfire coilpacks but stock coilpack loom and ignitor. I tried directly grounding the ignitor ground to body as well. 
×
×
  • Create New...