My New Xu13j4 Engine ...

[B1ack_Mi16 67]

Now It's soon been 1 year since I started this engineproject.

I'm using XU10J4R engineblock, overbored to 88mm.

Using XU11D 92mm crank, which is offset-grinded to 94.5mm stroke. This will give me the nice amount of 2300cc's exactly

 

The head is from a XU9J4 equipped with the Pumaracing big inlets, and standard size exhaust.

 

Some pictures:

 

Head while cutting valveseats, still just one exhaust seat is finished on this pic:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0632.jpg

 

The inlet ports, the injector cutouts are welded because the injectors will be in the throttlebodies.

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0634.jpg

 

So, the rest of the pics I think I'll put here as normal links

 

More of the head:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0633.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0635.jpg

 

Block bored to 88mm.. still need to skim it:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0637.jpg

 

Crank, balanced and offset-grinded, they've even balanced the small cambelt pulley

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0638.jpg

 

Here you clearly can see the offset-grinding if you look on the big end:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0640.jpg

 

BMW M3 rods I'm using, they've got custom length and width, and are custom Crower one-offs

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0641.jpg

 

In a few days I'll get these parts with me home, so I can start assembling it

[pacey205 2]

Looks good mate, when do you reckon youll have it all together and running ?

 

Im looking forward to the conclusion of this, interesting project methinks

 

Michael

[B1ack_Mi16 67]

Looks good mate, when do you reckon youll have it all together and running ?

 

Im looking forward to the conclusion of this, interesting project methinks

 

Michael

<{POST_SNAPBACK}>

 

 

The engine can probably be finished within this month if I want to...

Problem is the car, that's still very far from completion.

 

At the moment it's looking like this, I'm working on the cage, which I'm making myself from scratch:

 

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0630.jpg

[Hilgie 16 2 Cars]

Looking very good!

 

Which bearings and rods do you use with this crank???

[cybernck 400 1 Cars]

read more carefully .

 

BMW M3 rods I'm using, they've got custom length and width, and are custom Crower one-offs

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0641.jpg

i assume he's using M3 bearings too.

[KRISKARRERA 2 1 Cars]

Oh my, what a beast that'll be!

Any idea what power/torque might be?

[B1ack_Mi16 67]

Oh my, what a beast that'll be!

Any idea what power/torque might be?

<{POST_SNAPBACK}>

 

No idea, but I'm hoping for 230-250bhp somewhere..

Guess approx 260Nm of torque..

[Mandic 0]

Now that's a fine spec, good job!

 

Hope we'll see it running soon...

 

Cheers

 

Ziga

[TB_205GTI 1]

Looking really good! I wish that engine would fit my car - then you can have my 1.6 (see it a starting point for a new project)

 

 

(btw. do you often shop in Rema1000?)

[B1ack_Mi16 67]

Looking really good! I wish that engine would fit my car - then you can have my 1.6 (see it a starting point for a new project)

 

You wish

 

(btw. do you often shop in Rema1000?)

<{POST_SNAPBACK}>

 

Rema 1000, yes for sure, how's that?

[TB_205GTI 1]

(btw. do you often shop in Rema1000?)

<{POST_SNAPBACK}>

 

Rema 1000, yes for sure, how's that?

<{POST_SNAPBACK}>

 

All the bags in your garage are REMA1000 bags

[B1ack_Mi16 67]

Got the block, head and crank home now.

Need to sort out the cambelt and tensioners now so I can check piston-valve clearance.

 

Some more pictures, head is now finished, only missing a light skim.

 

Nice big valves occupying space in the chamber:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0700.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0685.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0687.jpg

 

Picture through a 45mm Jenvey:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0703.jpg

 

Pics of inlet-port:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0701.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0702.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0691.jpg

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0688.jpg

 

Rod and piston:

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0697.jpg

 

Made valve-pockets in the piston, but need to check clearance to see if we'll have to make them deeper, pisons are grinded to a matt surface, so the carbon deposits should stick better to it, and not flake off.

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0698.jpg

[petert 550]

I hope that's not a step I can see down the throat of the Jenvey! It otherwise all looks impressive.

[Gentrix 2 1 Cars]

and look at those nice shiny wheels in the background

 

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0703.jpg

[B1ack_Mi16 67]

I hope that's not a step I can see down the throat of the Jenvey! It otherwise all looks impressive.

<{POST_SNAPBACK}>

 

It's not a step, it's completely flush between inlet-manifold and the jenvey, but the different surface-finish makes it look like there's something "wrong". In that picture the jenveys were just hanging there too, so they're probably at a bit of an angle and not correct mounted.

 

BTW. did you take that picture of the tensioners/block so I can see if the J4R block have the same mounting holes as the J4 ?

Edited September 4, 2005 by B1ack_Mi16

[petert 550]

BTW. did you take that picture of the tensioners/block so I can see if the J4R block have the same mounting holes as the J4 ?

<{POST_SNAPBACK}>

 

whoops. I'll do it now. Are those wheels 15x6.75 Speedlines? I'd love to find another set of those.

[petert 550]

XU10J4 tensioners:

[B1ack_Mi16 67]

XU10J4 tensioners:

<{POST_SNAPBACK}>

 

Looks pretty much the same to me....

 

Have testfitted crank and one rod/piston now. Everything seem to be spot on

Piston protrudes approx 0.3mm above deck @ TDC.

 

BTW.. Compression is 11.6:1, guess it's possible to use normal 98 ron pump-fuel with the 4901503 catcams?

 

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0707.jpg

 

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0708.jpg

[DrSeuss 0]

Have you checked the block for porosity, i know hiflow when building overbored iron blocks said at least a few were good for scrap afterwards.

[B1ack_Mi16 67]

Have you checked the block for porosity, i know hiflow when building overbored iron blocks said at least a few were good for scrap afterwards.

<{POST_SNAPBACK}>

 

Hm.. don't think it's been checked for porosity..

How can that be checked?

[DrSeuss 0]

Not really knowing what it actually is (but having heard of it) i googled for my solution. Which is to get it leak/pressure tested, much like you would a cylinder head. I'm sure it'll be fine or someone more knowledgeable then i will have something to say. All looking absolutely splendid btw, what kind of rpm are you expecting peak power, presumably those cams are pretty beastly specs to get the air into such a large engine.

[B1ack_Mi16 67]

Pressuretesting.. Hm.. Putting it under almost as much pressure as under driving-condition then? At least the bores are not pitted, so no porosity visible Guess it'll be ok...

 

The cams is what used to be the mildest grind of mechanical cams in CatCams catalogue. I asked them and they reconned max bhp a few hundred rpms below 7000rpm.. But guess that will change a bit with the big-valves, if they're flowing more than standard, which I can't know, because he's not using a flowbench on the headwork.... At least he's got many many years experience.

 

I'm hoping for somewhere in the region of 250Nm and 230-240bhp.

But not convinced that the 309 gti16 exhaust-manifold is up to the job. Time will show.

[Mandic 0]

Forced induction performance tuning, A. Bell, page 344.

 

He says You should check block first at 40psi and then if it holds at 50. Spray the outside&inside of the block with penetrating aerosol like WD40. If block is damaged You'll see the bubbles on the surface.

 

Cheers

 

Ziga

[madaxgt 0]

I may be missing something here but what pistons are you using and did you think about getting them cermic coated? surprisingly cheap and reduces detonation damage which may be a factor with a relatively high compression ratio. (http://www.ctgltd.co.uk/technology.php?id=1&title=Introduction) were doing an offer a while back about £100 for four pistons some guy at my uni did a project on it a while back.

Engine looks very nice as every one has said.

What engine is that crank from?

[B1ack_Mi16 67]

I may be missing something here but what pistons are you using and did you think about getting them cermic coated? surprisingly cheap and reduces detonation damage which may be a factor with a relatively high compression ratio. (http://www.ctgltd.co.uk/technology.php?id=1&title=Introduction) were doing an offer a while back about £100 for four pistons some guy at my uni did a project on it a while back.

Engine looks very nice as every one has said.

What engine is that crank from?

<{POST_SNAPBACK}>

 

It's forged Wiseco Nitrous pistons for Chrysler Neon.. 88mm bore.

They're coated on the skirt to reduce friction. I really can't be arsed with getting them coated on the crown, have already spent far too much money on this now.

 

The crank is from XU11D 2.1 TD, offsetgrinded from 92 --> 94.5mm stroke now using first undersize BMW M3 (the old M3 .. is it E30 it's called?) rod-bearings and custom made rods.

 

Got the cambelt and tensioners now, so did a little test-fitting earlier today.

(I know the orange rockercover really don't match the red jenveys at all.. )

 

http://cortex.fa-s.ntnu.no/~kristian/205gt...05/CIMG0719.jpg