Jump to content
SAU Community

Recommended Posts

Here is what happened. A mate of a customer shown interest of buying the test car, welling to pay my asking price but requested for a compression test at a known workshop that few of my customers went and have sent me a number of jobs in the past. (Not chequrered tuning or any one from the SE).

The car was perfect, drove in to the work shop. They did a comp test, all came up to 170 psi. After the plugs were put in, crank and straight way there was a knocking sound in the engine. The mechanic "one of my customer" also found a missing coil pack bolt that I know it was not missing from start. I'm 90% sure some that was dropped into a spark plug hole, but the shop owner tries to convince me its a knocking sound from end bearings. LoL. With oil pressure gauge alive and sender gage disengaged, it obviously makes no sense. I'm f*ken pissed off at this point but did not wish to turn at all those familiar faces. So that was the end of it.

I'm leaning towards of doing some work on Rb20dets. After all that's the only engine that I've missed out and the project will be very challenging.

.

Here is what happened. A mate of a customer shown interest of buying the test car, welling to pay my asking price but requested for a compression test at a known workshop that few of my customers went and have sent me a number of jobs in the past. (Not chequrered tuning or any one from the SE).

The car was perfect, drove in to the work shop. They did a comp test, all came up to 170 psi. After the plugs were put in, crank and straight way there was a knocking sound in the engine. The mechanic "one of my customer" also found a missing coil pack bolt that I know it was not missing from start. I'm 90% sure some that was dropped into a spark plug hole, but the shop owner tries to convince me its a knocking sound from end bearings. LoL. With oil pressure gauge alive and sender gage disengaged, it obviously makes no sense. I'm f*ken pissed off at this point but did not wish to turn at all those familiar faces. So that was the end of it.

I'm leaning towards of doing some work on Rb20dets. After all that's the only engine that I've missed out and the project will be very challenging.

.

90% of people drop rb20's in the bin. So I wouldn't bother.

What I'm interested in is RB25Neo, not DET the NA ones.

Higher compression, better response, on E85 with mild boost.

Mention is to Trent, see what he says ?

couldn't you just put a bore scope in the cylinders and see the marks it would have made as well as throw the compression tester back on there and show that its no longer the 170 across the cylinders to prove they f**ked it and 'you broke it you bought it'.

?

also why didn't you do the compression test yourself in your shop?

The buyer only trust that particular workshop, no one expected this issue. The car drove perfectly to the point when it was powered up again after the comp test.

The comp tester shown very little change after, its a metal "bashing around" sound from the upper half of engine. Work shop had a broken scope that can't be used. Owner offered $3.5G to rebuild that engine, to me the rest of the car's too rough to have that sort of money spent on. Buyer how ever was happy to take the way it is with $4G discount, his offer was accepted, and I'm over with it.

I'll be looking at few more skylines this week, and hopefully be back on projects shortly.

I guess the point of bring that up is my RB25det NEO did not broke because it had excess boost at it. The failure was totally none performance related. They are excellent engines.

Don't bother with rb20s.

If you're going to draw a line under RB25 turbos, which probably isn't the worst idea, I'd concentrate on XR6 turbs or perhaps something for our retarded VG cousins.... sorry Fairlady and M35 owners.....even the designation VG sounds a little retarded....

Stao, how many rb20 hiflows and atr43ss1.5 do sell a year? I bought one of your hiflow second hand and it is a bit laggy, but if you go ahead and develop something really fast spooling for an rb20 I would be interested.

Don't bother with rb20s.

If you're going to draw a line under RB25 turbos, which probably isn't the worst idea, I'd concentrate on XR6 turbs or perhaps something for our retarded VG cousins.... sorry Fairlady and M35 owners.....even the designation VG sounds a little retarded....

That or a direct fit rb26 solution. The only options people have are -9,-7 and -5 reallly.

-9 resonse with -7 power would kill the market with direct fit.

  • Like 1

Wow thats totally bs stao.. i belive youv been in the business long enough to know what your talking about.. but there are plenty of people out there that arent as genuine unfortunately. On a side note im with most of the gang here i wouldnt bother with the rb20.. maybe rb30 turbos? Or some more rb26 bolt ons.. either way im happy

Name and shame that workshop. What a dog move.

yeahhh nah for the sake of the forum that can't be done. legal bills etc etc

anyway I vote twin-cam RB30's next! (please, i'm building one)

  • Like 1

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

    • That R31 was so cool. Only did Orange Park once. Scared the hell out of me.
    • Selling my TE37SLs since I've switched to smaller wheels.  They're for sale in Japan but it's pretty simple to send them overseas; USA excluded, since JPPost isn't sending there at the moment. Specs Front: 18x9.5j +22 5x114 Rear: 18x10j +20 5x114 Price: 320,000 JPY/ 3,285 AUD (current FX rate) Condition: a few scratches here and there, no bends, distortions or cracks.  Tires will not be included for international buyers, I'll get them dismounted before shipping. They're currently listed on yahoo auction and will be shipped in Japan with the tires if they sell here. Shipping costs to Aus: EMS (1-2 weeks): AUD 1,175 (current FX rate) Sea (2 months): AUD 460  (current FX rate)
    • The alloy coolant reservoir has a sight glass, so as long as I can see coolant in the sight glass it's GTG, as for PS, it isn't anything catastrophic if it gets low, and as it hasn't lost a drop since I have owned the car I cannot see it being an issue, even after putting the "big block" 2.5 in....LOL The only time it gets slightly messy is at oil changes, as the oil filter sits above the frame, and I need to use a plastic bottle with its bottom cut off to catch the flow when loosening the filter
    • Good on you for taking on the job, but it is a big one. Even if you have bolt on manifold and turbo, you will need: Post throttle pressure source to boost controller to wastegate (and FPR, and ECU/MAP sensor) Pre throttle pressure source to top of BOV(s) Oil feed - you can take that from the standard port in the middle of the block Oil return to block under the turbo - this is much trickier than it seems to route a decent/wide pipe past the manifold. You really can't use rubber hose because it is way too hot there, and also the oil out of the turbo core is a bit frothy so it needs to have a decent diameter Water feed - you can take that from the standard port in the rear of the block. Water return - mine runs to a T into the heater box return, just make sure you don't create a high point making bleeding hard. All of those lines should use 200 series style teflon braided hose with heat shielding because everything needs to be routed past the manifold. Also a turbo beanie is a really good idea to minimise the chance of the car catching fire (under bonnet lining in particular) You also need to decide a cam cover breathing solution as well, will you vent externally via a catch can (probably illegal) or return to the intake (plumbing required and can oil up everything over time) Keep in mind the intake and exhaust piping in the engine bay will be custom so you either need to be able to fab ally and steel or have someone you can get a car that isn't running to. Get the wideband fitting welded into the dump pipe at the same time. Also, just my opinion, a screamer pipe attracts attention and doesn't add power, I'd plumb it back if you want to be allowed to keep the car on the road. BTW do you know anything about how healthy the motor is, and what power you are targeting? Doubling or tripling the factory power on an unknown motor is a little risky. Also fuel system will need some attention (pumps, high current hanger, direct power and earth feed, injectors etc)
×
×
  • Create New...