Notices
Projects For Serious DIY Car Projects

JDM Widetrack 2.1 Stroker build.

Thread Tools
 
Search this Thread
 
Old 29 March 2013 | 12:28 PM
  #1  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default JDM Widetrack 2.1 Stroker build.

I never thought I'd be doing another one of these after deciding not to finish the track car I was building.

Just to bring you all up to speed I was building a full on track car. Which I got 90% done and then decided I didn't have the time, inclination or cash to finish it. Which is a decision I now regret.

The track car started life in my hands looking like this:



and we parted company with it looking like this.



It's New Owner is kindly carrying on my old build thread and the build itself. He's doing a terrific Job and the car now looks lke this.



I parted with the track car as I wanted something to enjoy the remainder of last summer in. Matt had showed interest in my car but said he needed to sell his first. He had an immaculate Widetrack JDM STI. I took a shine to it and we managed to strike a deal.

So September last year and the deal was done.





The Newage was supposed to be 450bhp and had all the right bits to achieve that. I was a little disappointed with the performance when i first took delivery of it. I just put that down to the fact it was a fully trimmed Newage and not a stripped out Classic that I had been used to.

Anyway after an incident with the induction kit and the exchange of the compressor wheel on the turbo to a billet one led to a remap it soon became apparent something was wrong. After 3 pulls on the dyno mapping was aborted. It wasnt producing the goods.

It wasn't spooling very well and certanly wasnt making the power it should have been.



Anyway after lots of fault finding with Help from Simon @ JGM and Kev and the guys at Scooby Clinic we identified that the sports cat had collapsed and was drastically reducing power.

Once the cat was removed and on a borrowed turbo from Kev we managed an immediate improvement but something still not quite right.



I swapped back to the original turbo an LM450 Billet and took it back to the rollers at SC.


Still moving in the right direction.

I then decided to have a meth map done. So off I went down to SRR and to get Simon @ JGM to work his magic once more.



I was happy with that result. However as part of the diagnostics that Scooby Clinic Kindly carried out for me we discovered a severely leaking cylinder whilst doing a leakdown test.

I didn't want to run the car @ circa 500bhp with some sort of issue. So I made the decision to strip the engine down and perform a rebuild.

I wasted no time in taking the engine out it was done a week after the meth map was done.




It stripped it down and was very pleased at the good condition the engine was in.

So as I never do things by halves it's having a full on rebuild.

The spec is as follows:
Closed Deck 2.0L Block
2013 EJ257Crank
Cosworth Rods
RCM Omega WRC Stroker pistons.
ACL Race bearings
Supertec Niterided Inlet Valves
Supertec Inconel Exhaust Valves
Double Valve Springs
Titanium retainers.
Spec C Cams

The block is currently away being prepared for the build.

Here's what I have got so far.

Brand New Crank from RCM





All new Bolts, seals, gaskets and bearings for the short block


Cosworth Rods




RCM/Omega WRC Stroker Pistons

These are a work of art.







Assembly starts when I get the block back from the machine shop which will be next week.

and so starts another build.

Last edited by dazdavies; 29 March 2013 at 12:30 PM.
Old 29 March 2013 | 01:05 PM
  #2  
joe v3sti's Avatar
joe v3sti
Scooby Regular
iTrader: (8)
 
Joined: Dec 2011
Posts: 3,244
Likes: 23
From: yorkshire
Default

Awesome mate, I remember your first post on your type r project years ago, what a tread that was! Look forward to reading this.

Joe
Old 29 March 2013 | 01:35 PM
  #3  
stonejedi's Avatar
stonejedi
Scooby Regular
iTrader: (51)
 
Joined: Jan 2008
Posts: 7,439
Likes: 149
Default

Subscribed.SJ.
Old 29 March 2013 | 01:42 PM
  #4  
bighoose's Avatar
bighoose
Scooby Regular
iTrader: (2)
 
Joined: Nov 2011
Posts: 438
Likes: 0
From: fife scotland
Default

Subscribed, gonna be some build Daz, love those pistons
Old 29 March 2013 | 03:33 PM
  #5  
craigybaby's Avatar
craigybaby
Scooby Regular
iTrader: (8)
 
Joined: Feb 2011
Posts: 1,899
Likes: 0
From: redditch
Default

Subscribed looking fwd to seeing this
Old 29 March 2013 | 07:43 PM
  #6  
andy00v7's Avatar
andy00v7
Scooby Regular
 
Joined: Feb 2009
Posts: 123
Likes: 0
From: kempston bedford
Default

Pistons look good pity you can't see them when it's built .


Andy
Old 29 March 2013 | 08:07 PM
  #7  
Matt R's Avatar
Matt R
Scooby Regular
iTrader: (10)
 
Joined: Jun 2001
Posts: 1,238
Likes: 0
From: Kent
Default

Will it be done by Blyton Sprint mate? Be good to go for a blast in it!
Old 29 March 2013 | 09:03 PM
  #8  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

Not a chance Matt, I'm in no rush with this. Although its only an engine build and not a whole car this one is going to be done to absolute perfection.

Last edited by dazdavies; 29 March 2013 at 09:04 PM.
Old 29 March 2013 | 09:51 PM
  #9  
super_ted's Avatar
super_ted
Scooby Regular
iTrader: (30)
 
Joined: Dec 2008
Posts: 2,602
Likes: 0
From: Oxfordshire
Default

Liking the progress thus far!
Old 29 March 2013 | 10:27 PM
  #10  
Kwik's Avatar
Kwik
Scooby Regular
iTrader: (10)
 
Joined: Feb 2007
Posts: 6,140
Likes: 0
From: Gone Dark
Default

Looking forward to seeing this progress
Old 21 April 2013 | 04:00 PM
  #11  
ditchmyster's Avatar
ditchmyster
Scooby Regular
iTrader: (7)
 
Joined: Dec 2007
Posts: 13,624
Likes: 7
From: Living the dream
Default

Progress report.
Old 21 April 2013 | 11:17 PM
  #12  
Fai17's Avatar
Fai17
Scooby Regular
iTrader: (2)
 
Joined: Jan 2008
Posts: 1,447
Likes: 0
From: MY 10s blobeye 10.87@132 2.35/TO4Z next
Default

You must be mad Daz.
Old 22 April 2013 | 11:08 AM
  #13  
ditchmyster's Avatar
ditchmyster
Scooby Regular
iTrader: (7)
 
Joined: Dec 2007
Posts: 13,624
Likes: 7
From: Living the dream
Default

Hi daz, are you by any chance going to do a bit of a how to step by step guide for those of us that are following in your footsteps.

I'd also be interested to know who you use to hone the bores and balance the crank and what's involved / required to do this.

Reason being i'm going to be doing this again myself in the coming months and it would be nice to have a good "all in one place" reference guide partly because i'm a lazy ****** and partly because you've done it a fair few more times than me, so can help me and others to avoid silly mistakes like the last time where I put the rear crank oil seal in too far and had to top up every fill as well as the joy of smelling oil burning on the exhaust for 1200 miles.

Pretty please.
Old 22 April 2013 | 04:32 PM
  #14  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

Haven't touched it for a while.

Collecting the block this week after all the machining work has been completed.

Progress will happen soon enough.
Old 22 April 2013 | 10:38 PM
  #15  
Dave Y's Avatar
Dave Y
Scooby Regular
iTrader: (52)
 
Joined: Nov 2008
Posts: 5,170
Likes: 135
From: Forest of Dean
Default

What would the budget be for a build like this?
Old 22 April 2013 | 10:47 PM
  #16  
Rob Day's Avatar
Rob Day
Scooby Regular
iTrader: (78)
 
Joined: Jul 2009
Posts: 9,451
Likes: 13
From: North West
Default

Subscribed, I love reading your threads Daz
Old 22 April 2013 | 11:14 PM
  #17  
Infected by sti's Avatar
Infected by sti
Scooby Regular
iTrader: (6)
 
Joined: May 2012
Posts: 3,221
Likes: 0
From: Cardiff
Default

Subscribed, looking forward to a good read
Old 23 April 2013 | 01:33 AM
  #18  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

Originally Posted by Dave Y
What would the budget be for a build like this?
2 relationships, 1 job, and **** load of cash that I dont have.
Old 23 April 2013 | 04:17 AM
  #19  
Dave Y's Avatar
Dave Y
Scooby Regular
iTrader: (52)
 
Joined: Nov 2008
Posts: 5,170
Likes: 135
From: Forest of Dean
Default

as much as that ! :-D
Old 23 April 2013 | 07:15 AM
  #20  
ditchmyster's Avatar
ditchmyster
Scooby Regular
iTrader: (7)
 
Joined: Dec 2007
Posts: 13,624
Likes: 7
From: Living the dream
Default

Originally Posted by dazdavies
2 relationships, 1 job, and **** load of cash that I dont have.
Just goes to show women and jobs come and go but scoobies are for life.
Old 31 May 2013 | 12:35 PM
  #21  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

As I've got the block back I can now get to work on it all.

I've now got everything to assemble the bottom end which I shall be doing this weekend.

The block has been converted to rear thrust, honed to suit the pistons and both block halves have been faced and it's been chemically cleaned. All done at my local machine shop for £252 inc vat which I thought was a bargain.

I've masked the block ready for painting. This is before the etch primer went on last night.


Old 31 May 2013 | 01:17 PM
  #22  
Rob Day's Avatar
Rob Day
Scooby Regular
iTrader: (78)
 
Joined: Jul 2009
Posts: 9,451
Likes: 13
From: North West
Default

Looks great Daz

You best your sleeves rolled up, totb is only 2 month away

Rob
Old 31 May 2013 | 01:20 PM
  #23  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

It's not that type of car this time. Just a nice quick fully trimmed 10 second road car
Old 05 June 2013 | 12:14 PM
  #24  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

I'm a tad concerned about the pistons. They are a stroker piston and as far as Im aware are for a standard length rod. Im beginning to wonder about this.

The following pictures are taken with the piston at TDC. Opinions please



Old 05 June 2013 | 03:22 PM
  #25  
Kwik's Avatar
Kwik
Scooby Regular
iTrader: (10)
 
Joined: Feb 2007
Posts: 6,140
Likes: 0
From: Gone Dark
Default

Wow they do sit high Daz, what's the height between gudgeon pin and deck on them?.

On another note, thanks for the throwback to dial-up modems I wasn't sure the pictures would ever upload.
Old 05 June 2013 | 05:32 PM
  #26  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

Originally Posted by Kwik
Wow they do sit high Daz, what's the height between gudgeon pin and deck on them?.

On another note, thanks for the throwback to dial-up modems I wasn't sure the pictures would ever upload.
Sorry about that, they're hosted on a server at home and I've been watching some films via netflix so it would be slow today

They aren't sitting high, if anything they are too low in the bore. I thought they should be flush with the deck face.

I'm wondering if I need a 1mm Longer rod.
Old 05 June 2013 | 06:49 PM
  #27  
Kwik's Avatar
Kwik
Scooby Regular
iTrader: (10)
 
Joined: Feb 2007
Posts: 6,140
Likes: 0
From: Gone Dark
Default

Originally Posted by dazdavies
Sorry about that, they're hosted on a server at home and I've been watching some films via netflix so it would be slow today

They aren't sitting high, if anything they are too low in the bore. I thought they should be flush with the deck face.

I'm wondering if I need a 1mm Longer rod.
You might be right, looking at some pics of some other engines the pistons sit flush but the dome on those make them look higher. Is the top of the dome flush at top dead centre?

Last edited by Kwik; 05 June 2013 at 06:51 PM.
Old 07 June 2013 | 02:29 PM
  #28  
dazdavies's Avatar
dazdavies
Thread Starter
Scooby Regular
iTrader: (22)
 
Joined: Oct 2000
Posts: 7,061
Likes: 82
From: N/A
Default

Just had a reassuring email from Olly.

"Just a bit of info for you, hopefully will put your mind at rest.

Version 1-4 cars, the piston sits 0.3mm above the block face.
Version 5-6 cars the piston sits 0.3mm below the block face.
New Age WRX’s the piston sits 0.3mm below the block face.
New Age WRX STI cars, the piston sits 1.5 mm below the block face.

Your stroker pistons should sit 1.25mm down the bore
."

So happy days I can crack on with the build
Old 07 June 2013 | 02:47 PM
  #29  
trails's Avatar
trails
Scooby Regular
iTrader: (41)
 
Joined: Nov 2003
Posts: 13,352
Likes: 56
From: in the woods...........555 Wagon Sqn
Default

you must have been re-leaved to get that...especially after all the posts on the other site
Old 07 June 2013 | 08:55 PM
  #30  
MartynJ's Avatar
MartynJ
Scooby Regular
 
Joined: Jan 2006
Posts: 2,629
Likes: 3
From: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Alcatek Proper Garage More than just a laptop!
Default

Originally Posted by dazdavies
New Age WRX’s the piston sits 0.3mm below the block face.
New Age WRX STI cars, the piston sits 1.5 mm below the block face.
Interesting, why the difference between WRX and STi unless of course they have concerns about valves touching during VVT operation.



All times are GMT +1. The time now is 11:31 PM.