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Robbo0001 Profile
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Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: T30 ti 02 5spd engine removal,stripdown and reassembly - Lots of pics -


Mate I have just sent you a PM with a question.
Cheers
Dave

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Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
15/Oct/2011, 9:01 am Link to this post Send Email PM   Send Private Message
 
colXtrail Profile
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X-TRAIL NEWBIE
 


Date Registered: 04-2011
Location: Melbourne
TOTAL POSTS: 12
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Re: Engine build kits from the US


Hi Scott,

Iv'e been following your excellent articles on tackling the QR25DE, keep up the good work!

Earlier on in the piece you mentioned that you had bought an engine recon kit from the US? Was it one of these:

http://www.ebay.com/itm/02-06-NISSAN-ALTIMA-MASTER-ENGINE-REBUILD-KIT-QR25DE-?cmd=ViewItem&hash=item4aa6690a46&item=320619481670

or:

http://www.ebay.com/itm/Engine-Rebuild-Kit-Altima-Sentra-2-5-QR25DE-02-05-?cmd=ViewItem&hash=item3355de2627&item=220483954215

Then you mentioned that you need to get different sized pistons? Was the kit you bought not .020"/.50mm oversize?

I used to be a car mechanic myself and have done quite a lot of engine rebuilds, was a long time ago though. I'm interested in knowing how much the exercise costs as I am considering having a go at mine.

cheers,
col.

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Xtrail: 2002 T30 TiL Series one auto (141,000kms)
17/Oct/2011, 4:52 pm Link to this post Send Email PM   Send Private Message Blog
 
evorock Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: T30 ti 02 5spd engine removal,stripdown and reassembly - Lots of pics -


Hi Col. Thanks for the response.
I actually picked up and paid for the maching and parts today.

What I ended up doing was buying the full engine rebuild gasket kit from Ebay which was $75.00 plus $75.00 Shipping. It comes with Head bolts and all gaskets/orings. This will cover all your Valve stem seals,Injector Orings, front and rear crank seals too.(not genuine parts but all really good quality none the less)

In the end I left the machine shop to order the pistons/rings/bearings locally as their supplier (NASONS) were very reasonable$ and I knew that the parts would be perfect and they wouldnt get lost in the post etc. The manufacturer is an Australian branded company too (ACL Bearings).

In regards to the Engine Head, you are pretty safe to just order your valves on ebay if you need them, you can get oversize ones if the seats need re-machining. (i just re-lapped new standard valves in and work fine)

Ive looked at the Ebay packages and either of those would be good. they both come with a front cover with oil pump. Unless you really need the pump and cover it would just add expense. A feeler gaude between the pump cogs would be the only way to determine tho.
Im not sure what the shipping would be but the one I was looking at,similar to yours was going to be an extra $300.00 with express priority.

These are the costs so far but will differ depending on where and who you get it all done thru.(Shop around and bounce prices off people, we all know the massive mark-up on stuff there is)
Approx prices as some of this stuff was all done at once.

Head Work/Parts - (Total $430.00)
           - Acid Clean/Decked/valve seats cleaned up and oil holes chamfered - $200.00
           - New Intake/Exhaust Vvs - $230 Locally (cheaper on Ebay but im impatient)

Block - (All parts and labour Inc GST was $945.00,breakdown below)
        
         - Pistons 20thou Over with Oversize rings,Gudgeon/Circlips - Total $160.00 - NASONS
         - Rod Bearing set (10thou under) $35.00 (ACL Brand=good)
         - Main Bearing Set (10thou under) $70.00 (ACL)
         - Thrust Bearings $20.00,std (ACL)
(The block was Decked,Honed out,chamfered,xrayed,cracked tested and acid cleaned for $650.00 this included the crank being grinded and balanced too.
I thought all that was pretty reasonable and I was given a decent tour of their workshop and insist I call them if I need any help whatsoever.

Its hard to know exactly all the auxillary prices but just remember to cost things like coolant,oils,cleaners,lubes,tools.

I reackon ill prob end up spending close to $2000.00 but will do a full cost breakdown when it all goes back together.

Hope this helps.
I would reccomend to get your machinist to order the pistons soo they can machine them to suit and not machine blind to a standard tolerance value.

things to note too
- Genuine Tie rod ends cost $90.00 each (yep horse shite from Nissan) dont damage em.
- Injectors may need a rebuild/clean. (Mr Injector on US Ebay sells rebuild kits for $25.00 with Instructions)
- Might as well do the clutch, mine was still fresh but ebay has good cheap standard ones.
-Water pump, get off Ebay
- Belts, Ebay
- Tensioner Bearings, REPCO, same as VP/VR Commondore from memory and cheap.

Honestly, the list can go on as you know as being a mechanic. My rule of thumb was if costs were approaching more than %75 of what it costs to get someone else to do it all then id just fork out the extra and hand the keys over. (Just not NISSAN)

          

---
2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
19/Oct/2011, 12:11 am Link to this post Send Email PM   Send Private Message Blog
 
evorock Profile
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Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
Reply | QUOTE
Re: T30 ti 02 5spd engine removal,stripdown and reassembly - Lots of pics -


Sorry Admin, double up, had to seperate. Away for a couple of days. emoticon

Some Shiny pics of new stuff...and old
Block/Crank looks dirty but they are covered in preservation oil before final wash and clean.

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Image emoticon Something evil has been dragged thru this engine and has destroyed these main bearings.






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2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
19/Oct/2011, 1:04 am Link to this post Send Email PM   Send Private Message Blog
 
cooch t31 Profile
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X-TRAIL HOLIC
 


Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:


Yeah those bearings look like they've had no oil runing through them.
Suprisingly there's quite a lot of carbon build up over the pistons as well, even below the oil ring.

At least now the assembly is all 'clean' work.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

19/Oct/2011, 4:58 am Link to this post Send Private Message
 
krisskross1985 Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 10-2011
Location: Gold Coast
TOTAL POSTS: 100
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Re:


just a word of caution from getting head gaskets from ebay.. with my old car Subaru there was a lot of people who had problems with these cheap gaskets you are better of going to a quality parts store ( Global or bursons on the Gold Coast) and getting one through them they mite even have a choice of quality. ( i replaced the head on my old mx6 and when i went to get the head gasket they had a choice of some crap one a metal one or a copper one so i went with the copper of course).. oh and Dammmmn can't wait to see your new shiny bits when there all together again what a mission you have set.. but hey you obviously no what your doing so ill just be shhh and keep reading..

Last edited by krisskross1985, 26/Oct/2011, 9:52 pm


---
2006 T30 40th aniv Auto
K&N, Platinum Plugs, Raised Muffler
DBA, Bendix Brakes EFS shocks, King Springs
Throttle Body Spacer, Alutech Strut Bar
My Custom made bash plate :D
Yokohama Geolander A/T
X-2113(c)
26/Oct/2011, 9:45 pm Link to this post Send Email PM   Send Private Message Blog
 
evorock Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: T30 ti 02 5spd engine removal,stripdown and reassembly - Lots of pics -


Thanks for the reply krisscross. I totally agree with ya on the cheap gaskets. There is some crap on the market which isnt to spec or quality. Im pretty confident with the gasket kit i bought as ive used them before. The company that makes them is called evergreen and alot of engine builders use them here in Aus. The head gasket is Metal 2 ply and all the other bits seem quite strong. only time will tell tho.

Im going to start building the engine over the long weekend as ive got all my new parts, cleaned everything, got all the torque specs and ready to go. cant wait to see my new pistons and crank all buttoned up.

Im still alittle worried about my timing and the timing of the Balancer unit. The manual is a little vague but its not overly hard to re-set timing once in. (but I dont want to)

If all goes well,touch wood... I should be able to turn the key on Sunday arvo.

Cheers mate..

Scotty

---
2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
26/Oct/2011, 11:13 pm Link to this post Send Email PM   Send Private Message Blog
 
colXtrail Profile
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X-TRAIL NEWBIE
 


Date Registered: 04-2011
Location: Melbourne
TOTAL POSTS: 12
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Re:


"If all goes well,touch wood... I should be able to turn the key on Sunday arvo."

So what happened?

col.


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Xtrail: 2002 T30 TiL Series one auto (141,000kms)
4/Nov/2011, 8:35 am Link to this post Send Email PM   Send Private Message Blog
 
cooch t31 Profile
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X-TRAIL HOLIC
 


Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:


Exciting.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

4/Nov/2011, 5:08 pm Link to this post Send Private Message
 
evorock Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: T30 ti 02 5spd engine removal,stripdown and reassembly - Lots of pics -


Sorry guys, I forgot I wrote that. ^^^^

Well....

I layed bearings and placed the crank into the Block and buttoned it up.
The Crank turns really smoothly and the End play and Bearing clearances were spot on.

I measured the ring gaps and were all snug at 16thou as to the recommendation of the machine shop, no filing was necessary
I assembled the new Pistons with their rods and Gudgeon pins and was quite simple and only a little bit of heat to coax the pins to fit snuggly in the small end. The rings went on the pistons pretty easily but were just a bit fiddly. I didnt use a ring expander and just did it all by hand.

I did my final wipe over of the cylinders and slid the pistons in the bore with relative ease. It took a few goes on a couple of cylinders as the piston compressor was a bit crap (there I go blaming tools again! ha) but got em in eventually and bloted the end caps into place.

Ive got some pics below..

Now the reason I havent 'turned the Key yet'
While I feel quite stupid for posting this, I feel I should share it so someone else doesnt have the same issue.

I reassembled the Head and Bolted into place.
Placed all the balancer unit back and all the timing gear components ie tensioner,guide rails crank gear and Cam Gears back in and torqued down.
I aligned the Balancer chain and the Timing Chain to the marks on the various locations and let the tension off the tensioner. I turned the Crank by hand and the chain bunched up and looked real messy and lots of erratic movements etc.
So I realigned and then put the front timing cover back and and tried again.... Same thing happenend and it almost skipped teeth when I rotated the Crank again,..

I freaked out and thought id done something wrong, I jumped on the Net and bought a new timing chain kit off Ebay for $150.00 delivered.

I had three rash reasons for this..
 - The Chain had stretched and was too loose.
 - The tensioner was screwed
or
 - Ive had the Head machined too much and everything was doomed...gulp!!.

Well after speaking to someone that quite easily explained to me on Monday morning at work that most Timing Chain Tensioners are 'HYDRAULIC' and only operate effectively when oil pressure is applied to the engine...... (Insert Slap myself in head here)

Soo as it stands, I have the engine fully assembled but have ordered new parts from USA so I might as well replace the timing train when It arrives even tho nothing is wrong. (Prob should have done this anyway!!)

Soo mental note to self. 'HYDRAULIC tensioners work with oil pressure and the spring and lug piston is only there to assist to guide the chain on start up.. derrrr!

Anyhoo.. the Saga continues. I hope this doesnt turn into a series of 'LOST'

Pickies. Self explanatory!
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Not much more I can do until aprts arrive, maybe wednesday! Ill try and figure out how the press the new seals into the Gearbox over the weekend.

Stay tuned,thanks guys....

---
2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
4/Nov/2011, 10:14 pm Link to this post Send Email PM   Send Private Message Blog
 


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