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Td04 Turbos On A Rb26

Bsa

By Bsa,
in Engines & Forced Induction

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discopotato03 Grand Master

discopotato03

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Posted (edited)

Your call but I don't think using two one time single four or six cylinder turbos is an economic reality- even if the turbos seem cheap and readily available .

I know Rexs are popular things for some but I'm not really than keen on the flat four concept with its factory cheaped out header system - the single scroll ones anyway . IMO the standard turbo systems on EJ20s are designed to cope with the screwy firing order of a lizard four and its lack of scavanging and low end torque . They started out with the TD05 to make power numbers but people bitched because they had , donns flack jacket , GTR type power delivery .

The TD04L was all about geting boost and torque at lower revs so Rex could get his tongue into gear without exploding . Loved that sickem Rex add BTW , lucky bastard ...

That aside no EJ20 TD04Ls would be hard to fit and as mentioned the mount flange is an unusual design - sort of asymetrical three bolt thing with the long section intended to get it out from underneath the turbo where you can get tools onto it .

The hassle with twins on RB26s is twice as much plumbing for the two dryers and it becomes a real snake pit even on std ones . Honestly with low mount twins I reckon anything but a bolt on replacement is a vary brave undertaking because of all the painstaking work to run the oil/water/air/exhaust plumbing .

I think you need to make a firm decision on a single or twins and go with something designed for the purpose if its twins . Sadly most of the high mount twins are big power big lag drag systems IMO and not something I'd want in a BMW .

I'm going to suggest a single GT3076R because it may have some reasonable response even if it doesn't make a squillion killowatts though it would make more than enough torque to destroy the tyres on a RWD Bimmer .

I'm not sure which era BM you have and the only M3 I've ever been near is an E36 , I think they use an all alloy 3L twin cam six with dual Vanos and ITBs . Arguably a bit more technology than an RB26 and the extra capacity doesn't hurt . Possibly not where you want to go but RB30s are probably the cheapest RB to get and in a RWD app with a sane state of tune not too shabby . IMO extra cubes and less extreme FI makes the nicest power .

A .

I'll burn in hell . Watch this and think - who needs an RB26 ...

Edited by discopotato03

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