Opel Omega C20LET swapped

Here is my 1992 Opel Omega with C20LET from a Calibra

Build is as follows:

Head:

Mild port

Crower lash caps

XE camshafts

Block:

JE 86.5mm 8.5:1 Pistons

Crower H-rods

Z20let oil pump

Oil squirters

Semi grout filled

ARP main studs

ARP head studs

Modified oilpan

Bolt ons:

Garrett GT3582R

PeterG Exhaust manifold

Billet intake

Bosch Motorsport injectors 1200cc

Big FMIC

Tial Wastegate and Bov

Electromotive TecGT

Drivetrain:

E34 M5 diff 3.91 ratio

E9x M3 gearbox (GS6-53BZ)

Spec Custom sinter clutch

Sachs Performance pressure plate

Lotus Omega axles

Custom 1 piece driveshaft from GKN

Subframes and brakes from Omega 3000

Suspension:

AP racing springs

Koni Shocks

Interior:

EVO500 interior

SPA design gauges

Car makes:

466 hp @7000rpm

600 nm @5000rpm (442ft lbs)

Car weighs 1275kg (2810lbs)

Everything is approved by the Norwegian Public Roads Administration.

So the car is fully road legal here in Norway :)

Would like to get som suggestions on further improvements.

Been looking at MaxxEcu and more modern turbo.

- Aksel

As a guy from the states that grew up in love with touring car racing in Europe this is very cool. I would be running around like I was Tommy Rustad loving life. nice build

What is the red car at first, I thought it was a Datsun 510. But I was wondering if it is an older Toyota after looking at it more, maybe a Corona?

Thanks!

The red car is my friends mx30 cressida

18RG swap, TRD supra diff, T3 suspension

He has 4 of them, all in different conditions

Little update!

Started taking the club level wiring course and plan on buying a Maxxecu Sport and making the harness for it.

Have also been looking at turbo's, mainly G30-660 and GTX3071r Gen 2.

Aim is ~ 400-450whp on 98 octane

Suggestions are more than welcome :)

Cool build!

It's been quite a while but IIRC, the XE cam' swap was just the intake with it retarded 7 degrees (that little change in timing was good for over 50hp, IIRC), using both the overlap killed power, especially bottom end, as it bled off boost. Might be a good idea to double check that as it could be a simple upgrade?

Thanks!

Dont quite understand what you mean about "using both"....

Are you talking about using one XE cam and one LET cam?

Or am I totally misunderstanding?

LET exhaust on stock marks, XE inlet retarded 7 degrees. It looks like you're using XE inlet and exhaust which, IIRC, lost significant power/torque over the former.

Your setup might work better for your full setup, though - have you experimented with any other combinations or timing?

Back in the day, goodness this is over 15 years ago - time does fly, there were some VERY smart guys from your part of the world with 4WD Calibras, and the Brazilians are also pushing the basic LET/XE engines to ever higher power levels!

Sorry for the late reply Gord

From what I understand and have heard from LET experts here in Norway there is no reason to only run one xe cam compared to both. Both low end and top end.

From what I recall, it was a simple, cheap way of gaining around 70hp, but there is a very good probability it was for stock or lightly modified cars.

In 15+ years I'm not surprised at a re-view with modern, modified engines where the breathing characteristics and requirements may be different.

I hope you felt the time checking was well spent, and you learned good things. :-)