[All] [Turbo] To sleeve or not to sleeve....

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scoops
Posts: 139
Joined: Wed Jan 18, 2006 7:46 pm

[All] [Turbo] To sleeve or not to sleeve....

Post by scoops »

Morning! i've taken the executive decision to 'go for it' over the next 2 years or so (funds permitting along the way) and take my st205 to he 450 to 500 bhp area. Now at the moment the biggest question in my mind is to go 86.5 on the stock block, or, stay 86 but have it sleeved. Sleeving seems favourite at the moment. would it be worth going 86.5 sleeved or would that be counter productive as it would involve removing even more block. or 86 sleeved and stroked?
Quigonjay
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by Quigonjay »

if we are only taking 500 flywheel i dont think sleeving would be neccessary
RyanRs
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by RyanRs »

scoops wrote:Morning! i've taken the executive decision to 'go for it' over the next 2 years or so (funds permitting along the way) and take my st205 to he 450 to 500 bhp area. Now at the moment the biggest question in my mind is to go 86.5 on the stock block, or, stay 86 but have it sleeved. Sleeving seems favourite at the moment. would it be worth going 86.5 sleeved or would that be counter productive as it would involve removing even more block. or 86 sleeved and stroked?


what sort of setup are you going for??

i have been haunted with this decision of sleeving for quite a while now.. and i have more or less come to the decision that , having it done is nothing less of a 'Good' thing to do.. because, it is a better and stronger material than the block, its designed for high tollerences and Will overall help fail safe your block.. where as if you dont sleeve it, and just that chance happens that something goes wrong... and you crack the block.. thats a lot of hard work and money down the pan!!

for a couple of hunderd quid, could save you loads if ever anything went wrong!

im to be using 86.5mm pistons with sleeved block..
scoops
Posts: 139
Joined: Wed Jan 18, 2006 7:46 pm

Re: [All] [Turbo] To sleeve or not to sleeve....

Post by scoops »

think its gonna be a 3076 turbo, uprated rods( probably not eagle, maybe oliver), injectors (sard), pistons (je)will then look at the cooling, not sure what the stock chargecooler is up to, possibly go front mount or maybe uprate the chargecooler. While the engines in bits will probably get the head gas flowed. We'll see how it goes. time to start saving me thinks.
Century Motorsport
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by Century Motorsport »

I have been running 500hp now for some time and have had no issues. It does depend on what boost your looking at running - on a 3076 to get 500 your gonna be running alot of boost which wont help - the main thing to bare in mind is how hard the car will be driven. If your looking at alot of track days then its probably a good idea to get done - if there is a weakness its going to show up after prolonged hard use.

If its done right you can put your mind at rest - if you have the cash i personally would do it.

Regards,

Nathan
Builders of the the UK's first 9second MR2 - 9.722 @ 148 MPH ----- 07947883103 ---- www.centurymotorsport.com
scoops
Posts: 139
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by scoops »

Century Motorsport wrote:I have been running 500hp now for some time and have had no issues. It does depend on what boost your looking at running - on a 3076 to get 500 your gonna be running alot of boost which wont help - the main thing to bare in mind is how hard the car will be driven. If your looking at alot of track days then its probably a good idea to get done - if there is a weakness its going to show up after prolonged hard use.

If its done right you can put your mind at rest - if you have the cash i personally would do it.

Regards,

Nathan


i'm begining to think, its the safe thing to do. What turbo are you running?
scoops
Posts: 139
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by scoops »

scrub that, just checked your profile
Spidey
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by Spidey »

I'm no expert but guy building my engine is sleeving the block and he's using Ross pistons - 99% sure they're 87mm. Is that too much ? :?

tia
Rob
splashnatz
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by splashnatz »

i run a 3076, didn't have block sleeved. so far it has survived, but it's only been 9 months or so LOL. Using 86mm pistons though.
V8Killer
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by V8Killer »

86mm pistons / thick walled block here running a GT35R (eventually)!
M5
EarL
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by EarL »

86mm JE's here with a GT3071. No sleeving, and expected 450+ soon.

EarL.
Sable Grey 2004 MkIII Roadster

Once an MR2 owner, ALWAYS an MR2 owner!
Bender Unit
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by Bender Unit »

Sleeve it! Will be far stronger than a non sleeved block despite the fact that more block material has been removed. For what it costs these days its definatley worth doing. If I was to do another build I would sleeve. That not to say you cant do it without sleeving though!
scoops
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by scoops »

right then.. sleeved it is.. now 86 or 86.5....
greeny
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by greeny »

Who are people using to sleeve there blocks?

Cheers Michael.
RyanRs
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Re: [All] [Turbo] To sleeve or not to sleeve....

Post by RyanRs »

scoops wrote:right then.. sleeved it is.. now 86 or 86.5....


86.5 :D go on! you'll gain like 30cc :P but thats still almost the displacement of a ped! and that can push like 15 stone!

oh, and it might make your turbo spool like some 150 rpm earlier :P hehe
TBDevelopments

Re: [All] [Turbo] To sleeve or not to sleeve....

Post by TBDevelopments »

if your going for piece of mind and strength go for 86.00mm pistons.

The sleeves i supply come just shy of 86.00mm so you can bore and hone them to the standard toyota piston size of 86mm. This will give you maximum possible strength from your combination.

Unless your going for a stroker kit that requires oversized pistons i see little point installing a sleeve to strengthen the block then removing most of its thickness strength by fitting oversized pistons when its not required.

Just my opinion of course.

Tim
xxxx
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