Frayz's V7 Prodrive Edition Impreza STi - "The Bomber"

Post by **Stuart** » Sun Nov 01, 2009 2:41 pm

Ha ha ha

There was one little phrase slipped in there that summarises why I'm glad you're back...

frayz wrote: In the meantime i decided to make some billet fuel rails for my build.

Fucking unreal

Fair play mate. Much better with no tat stuck on the sides (stickers are fine for racers in my opinion but a bit suspect on the road)

I'll be keeping an eye on this thread and watching old for some inspiring updates. Good old Andy (Maddog)...........damned generous mate you have there. Say 'hello' when you see him

frayz · Post by **frayz** » Sun Nov 01, 2009 2:50 pm

Hah, well you got to try and keep yourself uccupied mate haha.

Yeah Mogs (MADDOG) is a top guy, we're very good friends and speak alot. I'll pass on your regards mate.

Ive always prefered my car without graphics mate, it was done for a reason as you all know.

Looking forward to getting it all together

frayz · Post by **frayz** » Sun Nov 01, 2009 9:57 pm

Did a bit more today.

She started off looking like this.

And not to much later looked like this

As you can see the bores are in beautiful unmarked condition. This is just cyl 2 but the remaining 3 are in identical condition.

The block/rods/pistons etc is now for sale

RX7 · Post by **RX7** » Sun Nov 01, 2009 10:09 pm

Wow nice to have you back Frayz !!

Superb work on your car and nice to see its still moving along.
Have to agree with Stu that it looks nicer without the graphics.

frayz · Post by **frayz** » Thu Jul 08, 2010 4:19 pm

Well i guess id better give you guys something to look at, for those that havent died of boredom waiting for me.

Some of these are copy/paste so please be aware if theyre written in past tense.

Ive had mayor issues trying to source heads from various places. especially the US of which dispite trying all manor of shipping i couldnt get stuff to the UK affordably.

Eventually i picked up a set of JDM Version 8 AVCS heads. These were in good condition on the whole but very very dirty. Dirt aside i could see that they were in good shape and complete with cams, buckets and valvetrain.

So i started work on the LH head. This was given a basic cleanup and inspection. The RH one was done shortly after. Once happy, i fully stripped both heads ready for some machining before being rebuilt with new seals etc.

Sorry for the phone pics, my cameras been on loan, lol.

Here they are when i picked them up.

Heres the LH head after a little jolly up.

frayz · Post by **frayz** » Thu Jul 08, 2010 4:20 pm

Been to see my machinist yesterday to discuss some custom work to both my block and heads.
The block will be strengthened and the heads will have the combustion chambers altered to suit the larger 99.5mm bore of the 2.5.
I have specified the machining to give the correct cc volumes for my CR whilst maintaining good quench area.

I have also come up with an idea to prevent the common failure of the stock heads cracking. I'm not 100% sure it will all work as expected. But I've done the maths, so we shall see.

Heads have now been CC checked in stock form. If anyones interested, stock V8 JDM heads are 49cc.
They have been stripped of valvetrain. All parts have been inspected, cleaned, numbered and bagged for rebuild.

The heads had another hot wash before machining.

Taken to the machine shop this morning...

So now we wait....

Zzzz Zzzz Zzzz

frayz · Post by **frayz** » Thu Jul 08, 2010 4:20 pm

Fresh from the machinist. The heads and block need dressing and stoning in a couple of areas before washing.

The keen amongst you will see what ive done.

Before

After

And the block

frayz · Post by **frayz** » Thu Jul 08, 2010 4:21 pm

Plug areas now dressed and smoothed.

frayz · Post by **frayz** » Thu Jul 08, 2010 4:22 pm

Quick update on this.

Late change to spec includes a swap to Lateral long Crower H beam billet rods and Lateral custom wiseco pistons to suit.

The pistons are ever so slightly larger than the last set so the block has gone to be index honed to suit. I should get it back next week. The pistons/rods bearings have all been measured, checked and weighed. Now the complete rotating assembly only differs by 0.6grams.

frayz · Post by **frayz** » Thu Jul 08, 2010 4:22 pm

Block now index honed for clearance to suit the new Wiseco buckets. This needs another measure, inspection and wash before she goes together.

Some snaps of the new internals if youre interested.

Build should be underway next week.

Lol, look what arrived this morning. How frustrating now i cant do anything with them. Grrrr

Still, they look pretty, Supertech Racing one piece valves.

Stainless intakes with nitride coating and Inconel exhausts.