Well, after over a year in the making, the next level in Subaru stroker motors is now available. Tested to over 800hp these motors will give you the reliability you have been looking for.
We start off with a phase II 2.5 case and have special ductile iron sleeves intalled. The sleeves are flanged at the top to provide lateral strength(no need to fully close the deck) as well as a bigger sealing surface for the head gasket. Then we optimise the oiling system before finally having the cases aligned and decked. Also available is a custom 13mm headstud set. The thread pitch is altered to give maximum strength and stud size is up from 11mm. Heads will have to be modified for the bigger studs.(The pick below is of a 2.2 case that we had sleeved)
Then we add the internals. We use custom made-to-our-spec pistons and rods and a modified stock crankshaft. The pistons and rods are designed to work with the current DOHC WRX heads. They are turned into matched-sets and balanced. The crankshaft is spun balanced to 10,000rpms and then polished. All motors come with coated bearings and a full subaru gasket set.
Each short motor can come fully assembled or in kit form. Please be aware that if bought in kit form, modifications to the case must be completed by a machinist who is familiar with the subaru engine design.
Kit price is $3500
It includes all the internals, the sleeves, the headstuds, and a factory gasket set. It's everything you will need parts wise to build your own stroker engine. You will be responsible for finding a machinist to install the sleeves.
Complete short motor is $5750
This is a fully built short block assembly and comes complete ready to bolt your heads onto. You can either send me your heads for the small modification needed for the bigger studs(included in shortblock price), or have someone do it near you.
Also available is an upgraded valvetrain. It includes new lifters, shim, dual springs, TI retainers and a shim set. THIS IS THE CURE FOR OVER-REV PROBLEMS. There are two different kits available.
8500 RPM KIT is $1250 and uses single springs instead of dual springs. There is no modification to the head to run this set.
9500+Kit is $1450 This kit requires a small modification to the head for the dual springs.
If the heads are sent to me, I can also provide a very good valve job and any porting service. I would send them to the same head machinist who did our race heads and is one of the top head guys in the country. Price on this varies due to certain needs.
Below are some pics of an engine I just did for a person we all know in the forums. I used a 2.2 solid deck case for his engine. I can provide this also, but there is a cost increase due to having to buy the cases from the dealer. These 2.2 cases,although stronger than the wrx case, are not any stronger for our application. The sleeves we use make the stock 2.5 case much stronger.
Any questions, please give ma a call or email me. I would be more than happy to spend some time with you and answer any of your questions about my motors.
Axis Power Racing