Oj! johaidī!
Vispār jāsāk ir no otra gala - ar vismazāko iespējamo turbospiedienu. Visiem ielas wastegeitiem tas ir krietni zem 1bar.
Un jāsāk ar aizdedzi, kura dotajam motoram ir zināmi vēla.
Vislabākā grieze sanāk, kad spiediena pīķis ir kādus 17grādus pēc AMP. Ir labāk uztaisīt, ka tas ir 20grādus pēc, nekā pirms tiem 17. Lai to panāktu, aizdedzi pamazām paagrina, kamēr vai nu nepaliek vairs labāk vai kamēr nesākas detonācija. Pārkāpjot kādu no šiem abiem nosacījumiem, tātad, ja asi uzdetonē vai ir par agru aizdedze, līkus klaņus var dabūt ātri vien.
Bet nu jā: klaņi šitam motoram ir vājā vieta....
How much power can the stock engine take?
Contrary to popular belief the 1.8T's engine does not have forged internals The pistons are forged Mahle's, but thats it. The limit of a completely stock 1.8T is around 400hp TQ snaps rods, not hp. What turbo you have limits the power you can make with it. A slower spooling T3T4 50trim or larger housing DBB turbo (.86 t25) will make plenty more hp safely than smaller and faster spooling turbos. The rule of thumb is 300tq on 19mm rods and 320tq on 20mm rods. Tune and boost control are very important when approaching these limits. After that your gona start snapping rods. Other than that, you dont need to touch anything else. You could swap in new pistons to lower the compression ratio, but the stock piston's have been proven to be able to handle over 700hp. If your gona be taking the engine to over 8k RPM (sometimes 7500RPM) than you'll also want to upgrade the valve springs so you dont float a valve. There are 900+ hp 1.8T's out there. The stock engine can rev to 7.5k stock (well 8k but thats risky) before needing built.
300tq nozīmē 407Nm.
http://www.audiforums.com/forum/audi-a4 ... 968/page2/