PDA

View Full Version : Turbo Update


Coops
20-11-2011, 16:39
For all interested

Right, update!

Finally decided to crack on and get the car apart and see whats causing the over-pressurizing issue i've been seeing this season on track.

So this is how the car is stood currently, looking a bit forlorn on the 'drive' and a bit unloved

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0442.jpg

the damps caused a bit of mould inside, but next to none really and i've chucked loads of silicone bags in there to soak up the worst of it, so the interior still looks okay :-) really need to get a garage when i buy a house next year though, not happy about damp and old clio tbh!!!lol!!

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0441.jpg

so bonnet off;

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0440.jpg

radiator and front coolant pipework out, i will be purchasing an alloy rad and silicone hoses to replace the final ones that aren't silicone yet. This is going to include some custom pipework, which i have made templates for and will be sending off to SFS performance to be made up over the winter :-)

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0438.jpg

the idea is to remove the downpipe as well as rest of the exhaust system and get a new one made up. i plan to put a flexi section in the downpipe and then get hold of a mongoose or similar and modify it into a full stealth system. all just ideas currently and as such i figured to save scrabbling about on the floor under the car, i'd whip the turbo off the manifold and leave it in situ for now!

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0443.jpg

parts pulled off for ease of access

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0448.jpg

and more bits off to get to head bolts

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0447.jpg

and head off, i cheated and cut the cambelt, hence the top cambelt cover is on ;-)

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0451.jpg

this is the head/valve/combustion chamber area after 4 years and 16k miles on high boost, not too bad me thinks, seems to be running lovely. small bit of pitting on the exhaust valves and some build up on the inlets, but nothing to write home about.

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0456.jpg

head gasket, still looks fine from a distance........

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0453.jpg

but whats this...............fire rings a bit damaged and theres clearly been some blowby as theres striations all across the fire rings

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0454.jpg

and heres the block.....again pistons seem okay, no build ups and evidence of poor running, and the bores are still lovely.

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo0452.jpg

but if you look closer in the red circles..............cracks........the damn blocks cracked across from the water ways to the head bolt holes.

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Photo04521.jpg

so it seems that the blocks cracked and the headbolts have lost clamping force, allowing blowby into the coolant system under full boost and as such pressurising the system!

so at least i've found a fault, but its some work now to fix.

plan is:

- send head off for refurb and skim/check inc valves lapped in etc
- get hold of good F7P block, preferably in working order
- check new block, rebuild as necessary with my wossener pistons
- tap oil return
- slap back in for 2012 boosting :-)

more updates as they come!

cheers

Ben
zmaster2k
20-11-2011, 17:17
Gutted for you Mate! At least the P's are relitivly cheap to get hold of!
fabulicious
20-11-2011, 17:37
I think that deserve's a pat on the back for finding the prob young coopsville!
Yes damp and clio's dont go well as i'm finding out with a friggin damp garage. Have an industrial humidifier running in it trying to dry it out since the flood.Bah!
talkingfish
21-11-2011, 20:45
Great post my friend! At least you have found what the problem is..... Keep us all updated!
tutuur
21-11-2011, 21:23
good to read you are fidling with it!
i'm buisy building myself a low-boost conversion for the 9'er 8)

where did you get the intake flange? or did you make it yourself/friend?
Jaff
22-11-2011, 00:41
any idea whats caused this? im currently building practically the same build as this in an 'R' so i want to avoid this if i can!

massive fan of your car tho :) did try finding you at FCS for a chat but you werent about
sideways danny
22-11-2011, 01:25
any idea whats caused this? im currently building practically the same build as this in an 'R' so i want to avoid this if i can!

massive fan of your car tho :) did try finding you at FCS for a chat but you werent about

I'd say there was oil in the bolt holes before the headbolts went in causing them to hydraulic
Coops
22-11-2011, 11:27
its possible it was oil in the holes, i cleaned them all out as best i could before the build and to be fair, its run perfect for 3 years, only in the last 18 months its shown issues.
Dunc
22-11-2011, 11:38
coopatron!

shame about the block......BUT, as you say, at least you know what the issues were!

Im looking forward to boost in 2012! From both of us ;)

Dunc

p.s. for once, my UT is much more complete and useable than ur clio! woohoo!
-jo-
22-11-2011, 13:54
Coops, what kind off chargecooler is that ?

Does anyone use the AVT chargecooler ? If yes, whats you're opinion ?
sideways danny
22-11-2011, 14:59
its possible it was oil in the holes, i cleaned them all out as best i could before the build and to be fair, its run perfect for 3 years, only in the last 18 months its shown issues.

can be hard. Saw one just like it at K-tec not that long ago, came back from being acid cleaned and they found the cracks on pre assembly inspection
Wobba
23-11-2011, 11:06
Good find Coopsie, it's a bummer bit now you know the problem and can sort it out reasonably easily.

An F7R wouldn't have cracked :p
tutuur
23-11-2011, 11:34
Coops, what kind off chargecooler is that ?

Does anyone use the AVT chargecooler ? If yes, whats you're opinion ?

Jo, thats the same chargecooler i have. it's a pace chargecooler originally designed for the r5 gtt.
-jo-
23-11-2011, 11:36
thx, couldnt find any renault owner that use the AVT so far.
Coops
23-11-2011, 18:35
ai, its a pace system, never seen an avt actually in use but seen pics of one in a clio bay. possibly bass direct had one on his original build???? wild guess but know i've seen it!


woddanory, seen more F7R's cracked like this than p's ;-) 2:1 :lol:
-jo-
23-11-2011, 18:49
http://www.chargecooler.co.uk/index.php?main_page=product_info&cPath=72&products_id=209
16v_paddy
23-11-2011, 19:13
An F7R wouldn't have cracked :p

You're right, it would have melted long before any cracks could appear & that's only after the owner has struggled to get it to run right for several months :P
2 live
23-11-2011, 21:03
good find coops.... should be back up n runnin in no time once youv sourced a block.
16v_paddy
23-11-2011, 22:39
I've heard he's already sourced a good block off some handsome fellow not too far away from him
Coops
23-11-2011, 23:27
but i had to reject it and get some scrap off some swine called paddy
16v_paddy
23-11-2011, 23:35
:lol: :lol: :lol:
Wobba
24-11-2011, 12:00
Hahaha. Did he try and sell you a JC5 as well? :lol:
2 live
24-11-2011, 13:08
I've heard he's already sourced a good block off some handsome fellow not too far away from him

aye, some helpful souls sorted him a spare out for nowt too ;)
16v_paddy
24-11-2011, 19:21
Hahaha. Did he try and sell you a JC5 as well? :lol:

:shock: bugger! Missed a trick there didn't I :lol:
bass_direct
25-11-2011, 01:14
ai, its a pace system, never seen an avt actually in use but seen pics of one in a clio bay. possibly bass direct had one on his original build???? wild guess but know i've seen it!


woddanory, seen more F7R's cracked like this than p's ;-) 2:1 :lol:

Nah I've always had Pace, just in a different position. It was Jamesy with the naples k-tec low boost turbo that has the AVT iirc
Coops
25-11-2011, 19:37
tbh think am gonna grab paddy's as it wont need bearings so will work out cheaper plus its got a new oil pump in it :-) spoken to adi tonight!