Engine Specs:


16v 2.0lt DOHC

 

Pistons: WOSSNER Group A 3 Ring Forged Pistons K9259D100 12.5:1 compression
Rods: TOGA Steel Rods with ARP 2000 Rod Bolts
Headgasket: WISECO MLS Headgasket
Cams: RISSE Motorsport Mild Cam
Oil Pump: Vauxhall Z20LET and modified pickup

 

ARP Bolt Kits:
ARP Head Stud Kit 209-4301
ARP Main Stud Kit 209-5401
ARP Flywheel Bolts 209-2801

 

Balanced/Ploished Botom End
Light flywheel (0.7kg off original weight)

 


 

Bearings

 

ACL Race Series:

 

Conrod Bearing Set - 4B2322HX - ACL Race Series STD

 

 

Main Bearing Set - 5M2327 - ACL Duraglide STD

 


 

 

Oil Pump Mod

 

I had to machine the Z20LET oil pump to match the standard so the Cam Belt backing plate fitted correctly.

 


Z20LET Oil Pump Mod

 


 

 

Gated Sump Mod

 

The gated sump which started off as a series of galleries that slowed the oil down as it sloshed away from the pickup but then I changed the design to have 4 "trap doors" that shut and open depending on the direction of the car to keep the oil around the pickup.

 


Gated Sump Mod

 


Gated Sump Mod

 

 

 


 

 

Block Modification

 

The oil feed to the head can get blocked up and most specialists such as SBD modify this area. Basically, the oil feed consists of a ball-bearing device which gets stuck so it's removed, the hole blocked up with abung, through which a 3/32 inch hole is drilled - the head doesn't need much oil in these engines.

 


Block Oil Mod