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Author Subject: Building a high boost engine
jimmyrallye

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Location: portsmouth

Registered: 19 Apr 2008

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Post #26
armzs16 wrote:
If you've never done it before I wouldn't be building a bottom end to run 400bhp. Particularly if it's already gotta be bored out and honed just get them to assemble it. Not to mention do you know what's acceptable wear on a used crank? How much end float is acceptable, how much piston movement is acceptable, how hard it should be to turn over, if shells are to tight, if the oil pump is in good condition etc etc.

If it was a standard engine and you fancied a go then I'd say go for it but if your talking a few grands worth of shiny forged bits in there I'd be giving it to someone else who's done it a million times before.

I'd also be fitting uprated bearings and rod bolts etc at the same time which I'm sure rich can supply you.


This is good advice you don't want all your shiney tax rebait going poop on you

________________________________________


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Posted 17th Apr 2014 at 21:03
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allanallen

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Location: Buxton

Registered: 01 May 2007

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Post #27
Mixed opinions as usual Razz

The only engine I paid to have built was a heap of s**t and took me months and a lot of cash to put right LOL

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Posted 17th Apr 2014 at 21:08
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pete_rallye

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Location: Yorkshire

Registered: 12 Dec 2002

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Post #28
allanallen wrote:
Mixed opinions as usual Razz

The only engine I paid to have built was a heap of s**t and took me months and a lot of cash to put right LOL


x3 and then add the court case where the judge can't work out how engines work, which didn't help my case. Buy some books, do some research, take your time, its not that difficult.

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Posted 17th Apr 2014 at 21:17
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pete_rallye

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Location: Yorkshire

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Post #29
allanallen wrote:
Get the machining company to check the crank over when they do the Block, the rest is just nuts, bolts and a few simple measurements.


Also, machining companies make mistakes, if you can't/don't have the necessary equipment take it to someone who has the necessary measuring equipment and ask them to double check the companies work, might not be necessary but I like to be sure...

________________________________________

Oulton Park in a BTCC 306 vid 1
Oulton Park in a BTCC 306 vid 2
Lap of the 'ring
Posted 17th Apr 2014 at 21:20
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jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #30
There is an engine builder local to me who is doing the block so I'll get the crank checked.

As I was saying almost every other seal and bearing will be new so wear isn't a factor on most things. Where possible these will be uprated items

I'm boring the engine .5mm as I can guarantee the seal with the piston which a few people recommend.

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 18th Apr 2014 at 12:51
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allanallen

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Post #31
Make sure he Checks the crank for straightness as well as the journal size and condition Wink

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Posted 18th Apr 2014 at 14:37
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jamiek_uk2000

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Location: Llanelli

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Post #32
Got to strip the engine today, it's in really good condition so it looks like I was lucky on this engine.

Rebuild the head and recondition the oil pump, I've asked Rich so I hope he can do it.

Block is going to the engine builder on Tuesday to be decked and bored out .5mm. Then it's a bit of waiting for the rods, pistons and bearings to come from Rich (Once I get my tax return money!).

I need to get a charge kit first aswell, I have spoke to Mechanical Repairs about one he has but as there is a lead time on the rods I may have to pay for them first to get the ball rolling and then once a charge kit comes up again I'll buy that.

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 19th Apr 2014 at 18:31
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jamiek_uk2000

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Location: Llanelli

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Post #33
How the f**k do I get the dipstick out the engine, it's right in the way and it's going to get bent if it stays where it is!

Also how do you lock the crank pulley to undo it, I probably should have done it before I cut the belt off! I'm debating putting 36" stilsons on the thing since I'm putting an alloy pulley on anyway, but mine are in work and can't get them until Tuesday

Anybody need a set of standard pistons and rods....

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 19th Apr 2014 at 18:33
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #34
lock the crank via the flywheel, undo the bolt with a big bar.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 19th Apr 2014 at 19:06
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Niall

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Location: Epsom

Registered: 06 Jun 2012

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Post #35
The dipstick tube thats bent and bolted to the oil pump just twists out. Quite a tight fit. The rest is just pushed in but a very tight fit. I found it easier to leave it on the block whilst building the engine.
Posted 19th Apr 2014 at 19:51
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bigbadbowen

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Location: Winchester

Registered: 21 Nov 2003

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Post #36
allanallen wrote:
Make sure he Checks the crank for straightness as well as the journal size and condition Wink


Any decent engine builder will get the the crank checked over and balanced with any rotating mass included ? Ie pulley, fly wheel and clutch Thumbs up

If you use a a good reputable engine builder who has experience with the xu lump you should be ok ? But no court in the land will hold them responsible for a failure as as there is too many variables after you pick up it and install it Yes
Posted 19th Apr 2014 at 21:36
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armzsc6

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Post #37
welshpug! wrote:
No differemce from assembling a std engine or a high boost.



Other than the price......

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Posted 19th Apr 2014 at 22:40
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

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Post #38
just a set of rods and pistons.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 19th Apr 2014 at 22:49
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bigbadbowen

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Post #39
And the knowledge of building engines
Posted 19th Apr 2014 at 23:52
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bigbadbowen

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Post #40
Get it built by a reputable engine builder job done but if it goes bang then tough sh1t that's how it goes
Posted 19th Apr 2014 at 23:59
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jamiek_uk2000

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Post #41
Well I stripped it, I'm gonna get it bored and the head rebuilt tjen see whete I am. I think I mah get lynx to build it now. More overtime and some reputable engine builders!

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 20th Apr 2014 at 02:06
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #42
Since when have they been engine builders?

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 20th Apr 2014 at 06:41
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #43
welshpug! wrote:
Since when have they been engine builders?


Zzz

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2000 (X), Moonstone Love
Posted 20th Apr 2014 at 07:13
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #44
Missed your morning tea stanley??

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 20th Apr 2014 at 07:30
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rich_w

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Location: Havant, Hampshire

Registered: 29 Jul 2004

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Post #45
Since we started building engines I guess? Unsure


welshpug! wrote:
Since when have they been engine builders?

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rich@lynxpowerengineering.co.uk
07732 822546

Posted 20th Apr 2014 at 11:31
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #46
rich_w wrote:
Since we started building engines I guess? Unsure


welshpug! wrote:
Since when have they been engine builders?


Cracking answer Rich, I guess some people just think that the only people who can build engines are the people they know. LOL

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Apr 2014 at 11:59
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superchargedblack1997gti6

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Post #47
Lynx have built me some very strong engines over the years and will continue to do so. I have to be the least sympathetic driver and I've run engines for 30,000 plus miles with 7k launches and flat shifting with no issues. Well worth doing properly once than paying out twice in my opinion

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Super high boost Completed, destroyer of gearboxes and 160mph club
Posted 20th Apr 2014 at 12:26
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #48
superchargedblack1997gti6 wrote:
Lynx have built me some very strong engines over the years and will continue to do so. I have to be the least sympathetic driver and I've run engines for 30,000 plus miles with 7k launches and flat shifting with no issues. Well worth doing properly once than paying out twice in my opinion


Exactly this. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Apr 2014 at 17:52
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jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #49
I've just stripped it totally and I am now thinking the above. I don't think that Lynx will charge much to build the bare engine (I hope, I just messaged Rich)

It's only really the main bearings, big end, fit the pistons, torque them up and then fit the oil pump and pan, bolt the sump on and that's it. They are rebuilding the head for me so they could fit that the same time then I have something that is good to go (In theory!)

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 21st Apr 2014 at 16:15
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

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Post #50
surely if you've stripped an engine, you can put it back together?

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 21st Apr 2014 at 18:29
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