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Author Subject: Is it safe to use the bottom end of a "snapper"?
matt evans

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Location: Stourbridge

Registered: 16 Sep 2009

Posts: 2,290

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Post #1
As per the title, is it safe to reuse the bottom end of an engine thats suffered a snapped cam belt?

I know folks rebuild the heads and that but does any damage get done to the pistons/rods/crank when theres a valve / piston coming together?

Or is that the valves are the weakest link and the pistons emerge unscathed?

________________________________________

1999 Astor Grey GTi-6 OEM+ (now gone...)
2004 Aegean Blue 206 GTi 180 (also gone...)
2006 Skoda Fabia vRS in Sprint Yellow

honestly3k wrote:
Do you wrestle for a living matt? You sound like a monster LOL


owain wrote:
Nothing involving a 306 can be considered worthwhile.

Posted 15th Nov 2011 at 19:00
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greenbelt

Seasoned Pro

Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #2
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too.

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Posted 15th Nov 2011 at 19:35
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hovis16

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Location: Reading/parts for sale

Registered: 21 Nov 2008

Posts: 4,306

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Post #3
greenbelt wrote:
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too.


a big yes yes

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Posted 15th Nov 2011 at 19:46
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greenbelt

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Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #4
hovis16 wrote:
greenbelt wrote:
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too.


a big yes yes


You a member of the 'Been there, done that, got the t-shirt' club too? LOL

________________________________________

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Posted 15th Nov 2011 at 19:51
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roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

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Post #5
greenbelt wrote:
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too. you should by roland rats fully rebuilt engine


EFA Whistle
Posted 15th Nov 2011 at 20:52
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greenbelt

Seasoned Pro

Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #6
roland rat wrote:
greenbelt wrote:
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too. you should buy roland rats fully rebuilt engine


EFA Whistle


EFG Whistle

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Posted 15th Nov 2011 at 20:55
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roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

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Post #7
EFG?
Posted 15th Nov 2011 at 20:59
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greenbelt

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Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #8
Grammer LOL

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Posted 15th Nov 2011 at 21:00
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roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

Status: Offline
Post #9
greenbelt wrote:
Grammer LOL


Doh LOL
Posted 15th Nov 2011 at 21:45
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

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Post #10
greenbelt wrote:
Grammar LOL


EFG Laugh my ass off

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Posted 15th Nov 2011 at 22:31
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matt evans

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Location: Stourbridge

Registered: 16 Sep 2009

Posts: 2,290

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Post #11
Thanks for the tips guys. As a bare minimum i was going to whip the sump off, check the crank and renew big end and mains anyway. Seems pointless not to do it TBH.

Is Rich W the best man for a bearing set?

________________________________________

1999 Astor Grey GTi-6 OEM+ (now gone...)
2004 Aegean Blue 206 GTi 180 (also gone...)
2006 Skoda Fabia vRS in Sprint Yellow

honestly3k wrote:
Do you wrestle for a living matt? You sound like a monster LOL


owain wrote:
Nothing involving a 306 can be considered worthwhile.

Posted 16th Nov 2011 at 09:50
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greenbelt

Seasoned Pro

Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #12
Yes, but I dare you not to buy shiny bits...

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Posted 16th Nov 2011 at 10:37
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matt evans

Seasoned Pro

Location: Stourbridge

Registered: 16 Sep 2009

Posts: 2,290

Status: Offline
Post #13
greenbelt wrote:
Yes, but I dare you not to buy shiny bits...


Must resist, must resist

________________________________________

1999 Astor Grey GTi-6 OEM+ (now gone...)
2004 Aegean Blue 206 GTi 180 (also gone...)
2006 Skoda Fabia vRS in Sprint Yellow

honestly3k wrote:
Do you wrestle for a living matt? You sound like a monster LOL


owain wrote:
Nothing involving a 306 can be considered worthwhile.

Posted 16th Nov 2011 at 10:50
Profile
roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

Status: Offline
Post #14
*cough* Whistle
Posted 16th Nov 2011 at 10:53
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greenbelt

Seasoned Pro

Location: How's Life In London?

Registered: 23 Apr 2006

Posts: 1,961

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Post #15
Or there is another option apparently...

LOL

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Black HBSC6 Smoke
Posted 16th Nov 2011 at 11:27
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matt evans

Seasoned Pro

Location: Stourbridge

Registered: 16 Sep 2009

Posts: 2,290

Status: Offline
Post #16
greenbelt wrote:
Or there is another option apparently...

LOL


Hmm, picking up a bottom end this evening im afraid.....

________________________________________

1999 Astor Grey GTi-6 OEM+ (now gone...)
2004 Aegean Blue 206 GTi 180 (also gone...)
2006 Skoda Fabia vRS in Sprint Yellow

honestly3k wrote:
Do you wrestle for a living matt? You sound like a monster LOL


owain wrote:
Nothing involving a 306 can be considered worthwhile.

Posted 16th Nov 2011 at 12:57
Profile
roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

Status: Offline
Post #17
matt evans wrote:
greenbelt wrote:
Or there is another option apparently...

LOL


Hmm, picking up a bottom end this evening im afraid.....



Fine,kiss my swingers! Flip LOL
Posted 16th Nov 2011 at 13:56
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matt evans

Seasoned Pro

Location: Stourbridge

Registered: 16 Sep 2009

Posts: 2,290

Status: Offline
Post #18
roland rat wrote:
matt evans wrote:
greenbelt wrote:
Or there is another option apparently...

LOL


Hmm, picking up a bottom end this evening im afraid.....



Fine,kiss my swingers! Flip LOL


Nom Nom Nom Nom..... saltier than normal Ashley!Shock

________________________________________

1999 Astor Grey GTi-6 OEM+ (now gone...)
2004 Aegean Blue 206 GTi 180 (also gone...)
2006 Skoda Fabia vRS in Sprint Yellow

honestly3k wrote:
Do you wrestle for a living matt? You sound like a monster LOL


owain wrote:
Nothing involving a 306 can be considered worthwhile.

Posted 16th Nov 2011 at 14:15
Profile
hovis16

Seasoned Pro

Location: Reading/parts for sale

Registered: 21 Nov 2008

Posts: 4,306

Status: Offline
Post #19
greenbelt wrote:
hovis16 wrote:
greenbelt wrote:
Shouldn't be a problem...

But there are a few stories of bottom ends failing shortly after head rebuilds.

If you have the time and money then a full strip down and rebuild would be sensible. Get the crank checked and replace the main and big end bearings too.


a big yes yes


You a member of the 'Been there, done that, got the t-shirt' club too? LOL


yeap haha rebuilt ftmtw!!

________________________________________

Ph2 Black GTI 6!

EX black 6 owner
But now a Black caged rallye owner

Hunting for Go faster bits!


SEARCH

click here
Posted 16th Nov 2011 at 17:06
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Home -> Forums -> Engines -> Is it safe to use the bottom end of a "snapper"?

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