oil for 1.8t 400+

Hi everyone,
I just wanted to ask for advice motor about oil.

I'm working on project car same platform as A3. 1.8t (new beetle 2000 awv) and I'm buidling new engine,completly
with new turbo g25-550.Currently I have 260k and I'm using 10 40w

Do you recommend to upgrade or downgrade viscosity?
Which brand you recomend,wich viscosity?I guess should be some racing oil,but not sure which one is the best for me.

Djordje

@oilman , @<tuffty/> ,

Thank you guys a lot! This is very helpful. I think I'll go with 5w40...The temperature during the winter is around -20 and during the summer is around +35. Yes I'm planning to have track day sometimes, but this will be street/daily car + car for the track.

Btw. What do you think about Motul 300v? oil? Which one you are using?
Cheers

oilman said:

For hard performance use with heavily modified engines, Motul 300v is about as good as it gets. Great stuff.

Cheers,

Guy

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@oilman

Thank you for a quick answer, I'm not sure is it heavily modified, but this is the plan...

INTAKE MANIFOLD FMIC PRO AUDI VW 1.8T
1.8T 20V Forged Piston & Steel Con-Rod Set by Wiseco & BAR-TEK® 82mm 8.5:1
Black Front Mount Intercooler Kit - VW Golf Mk4 GTI | Audi A3 1.8T 20V - 1997-2004
Nortech Performance 1.8t Stainless Steel Tubular Exhaust Manifold V-BAND 1.8t 20v
Nortech Performance Downpipe
Turbosmart HyperGate 45m GenV black Wastegate
Ultimate Road Spec Camshaft AUD20TBP285B(Pipercams)
1.8t Supertech Inconel Exhaust Valves
SUPERTECH VALVE SPRING SET
ARP CYLINDER HEAD BOLT KIT 204-3901
1000cc Bosch
Luk dual-mass flywheel
Luk Pressure plate
Sachs 4 Puk Clutch
Sachs Release Bearing
Audi R8 Genuine Red Top Coilpacks
Garrett g25-550
ECU master black
Bosch 4-Bar Fuel Pressure Regulator
Fuel pump BAR-TEK®
Fuel pump wires BAR-TEK®
1.8T Adjustable Cam gear BAR-TEK®
Gates Racing timing belt
Mechanical belt tensioner (kit)
High torque crank pulley (kit)
Bolt for crank sprocket ARP
Bolt for cam gear ARP

Thank you so much

Gazwould said:

What is it's film strength in PSI ?

Click to expand...

Thank you @oilman , I'll definitely go with it!
@Gazwould I'm not sure because we didn't build the engine yet

desertstorm said:

It's a nice shopping list and I would say that is heavily modified engine. I wouldn't bother with 8.5:1 pistons as they will just make the engine flat off boost and not nice to drive as a daily. Do not go with Wossner pistons what ever you decide to fit.
Get the NGK R8 coilpacks from Autodoc around £100 for 4.
Plenty of big power high revving engines using standard Contitech / Gates belts . Get a 2.0 TFSI diamond washer for the crank bolt, only about £15 from the dealers and is a bit of cheap insurance on top of the ARP bolt. Not sure I would bother with the adjustable cam gear and piper cams. NA cams will work well for your build as the G25-550 is not that big a turboand you won't get the benefit at high revs 8K +.
I would also consider looking at the Ignitron ECU, fantastic piece of kit designed to replace the ME7.5 .
Have a look at the build thread for my 510bhp TT.
With the money you save not fitting fancy bits buy a CSF rad and fit a Thermostic oil cooler kit. Any track work will work the engine hard even fast road will push up oil temps on a 450bhp car.

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Hi @desertstorm thank you for joining the conversation and thank you for all your advice!
I'll take a look closer at your TT build, 510bhp is a lot of power. Definitely, I can save some extra money...Just trying to make a nice and reliable build. I don't want to save on the cheap parts, but sometimes I'm extreme...Maybe is too much

I already bought some parts and I can't go back at this moment
1.8T Race timing belt high performance KIT
-Gates Racing timing belt
-Mechanical belt tensioner (kit)
-High torque crank pulley (kit)
-Bolt for crank sprocket ARP
-Bolt for cam gear ARP
https://fmic.eu/en/engine/168099-intake-manifold-fmic-pro-audi-vw-18t.html
-INTAKE MANIFOLD FMIC PRO AUDI VW 1.8T
Black Front Mount Intercooler Kit - VW Golf Mk4 GTI | Audi A3 | Seat Leon | Skoda Octavia - 1.8T 20V - 1997-2004
-Black Front Mount Intercooler Kit - VW Golf Mk4 GTI | Audi A3 1.8T 20V - 1997-2004
https://www.bar-tek-tuning.com/1-8t-pistons-conrods-set-wiseco-bar-tek
-VAG X-Beam Con-Rods 144 x 20 mm BAR-TEK®
-ACL Motorsport Con-Rod Bearings
-1.8T High-Performance Pistons-Kit WISECO
https://jaaattengineering.co.uk/onl...steel-tubular-exhaust-manifold-v-band-18t-20v
-Stainless Steel Tubular Exhaust Manifold V-BAND
-Turbosmart HyperGate 45m GenV black Wastegate
-Downpipe


I just wonder about NGK, are they good as VW?I also need adapters?
I chose WISECO pistons 8.5:1 because people say that I can push more boost than with 9.5:1 it's hard to decide...I think they are reliable for what I'm planning to use,I really hope so. I heard that Wossner pistons failed most of the time and I decided to go with WISECO

I choose g25-550 because is small and powerful and starts spooling on very low RPM. I have to make a balance between turbo lag and the size of turbo. Trying to find the middle. Maybe I'm wrong!?

For the camshaft, I'm thinking between these ones...


and this one

The problem I have with ECU is a good tuner, unfortunately, I'm currently far from the UK and I can't go with Ignitron ECU, I found a tuner house that works with ECU master and I decided to go with it.

Where did you find CSF rad and fit a Thermostic oil cooler kit?I would buy it definitely...I can find something like that https://www.bar-tek-tuning.com/18t-oil-cooler-kit
Btw what about 1000cc Bosch are they are good enough? Which one you're using in your build?

Thank you again!
Cheer,
Djordje

desertstorm said:

HI, The intake manifold you have bought is unfortunately not any better and possibly worse than a stock manifold. It looks pretty but it's a poor design.They are a lot cheaper on Aliexpress.
https://www.aliexpress.com/item/400...xp_id=a3ed5416-15f8-4527-b743-312d4285b15a-51
It's ok running 8.5:1 pistons for a really big build with lots of boost. You are only running a G25-550 so 2 bar max really, Engine will obviously run OK but if you want quicker spool and more torque lower down something like 9.25:1 is better.
The NGK U5014 coils are well renowned and have been tested many times to perform really well and they aren't expensive.
https://www.ebay.co.uk/itm/383446538956?
The Bosch 1000cc injectors are what I use on my car, the best option for a 500bhp build.

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@desertstorm
Oh, man! I'm worried now. Looks like I did everything wrong...
I take 82mm pistons, just to get a bit more displacement...Now I'm thinking of a 2.0FSI crankshaft and build a stroker.Im not sure how aliexpress intake looks like,but this one have a nice finish inside and beveled edges...


btw. what is the oem code for bosch injectors?

Did you you think I will be far of 450hp with this setup?
Cheeers,
Djordje