For all those wanting 700cc - SV650.org

20-09-04, 12:35 PM

Hey all

Recently have become very interested in tuning the sv
but doing big dtyle using the engine not bolt ons!

Jhs 700cc kit is very expensive i thought and so as i will be doing all the labout myself i would investiget wiseco pistons!

I have found a dealer in england called www.wiseco.co.uk
who will according to the price list supply a 700cc kit for 144.64 (i assume plus vat) = £167.70! plus a rebore at say 30 - 40 quid, thats just over £200 squid for more cc! then i can start with jet kits etc!! this includes, pistons rings, clips, wrist pins and head gasket! seems good to me!

I estimate it will take about a week to do myself, including getting rebored to suit! acording to the jhs website the 700 kit gives 74bhp at the back wheel! ill get mine dynoed before and after!

I think this wil be the route i take!
Oh im tuning as i wont be getting a tl anymore cause it will be £947 tpft!

over the 400tpft i will probably pay when i tune the sv!

Any questions feel free to ask, or visit the website, look through the online catologue and then search on the price list the code!

20-09-04, 03:58 PM

Just a thought what will the compression be? I know you are increasing the width of the bore but if the pistons at TDC are flush with the top of the cylinder the compression will increase. This may give problems with pre-ignition no?

I'm not sure but thought it's worth mentioning. Keep us up to date with the project as it goes along.

Simon

20-09-04, 04:07 PM

It states that they are standard compression!
however whil the engine is in that many pieces i will probably fit the ignition advancer, not surebout the cams though, might be able to get the reground rather than having to get newer or exchange ones. however could double the cost and put it out of my price range if i need cams aswell!
I was questioning wether i could get away with re shmming, but to what i have no idea!

Still in reaserch and **** up stage!

Alex

20-09-04, 04:21 PM

What about the cams?
You much for those?
I'm running 73 bhp on the back wheel already with just can, jetting and K&N. I'm not sure going to 700cc is worth it for just one pony....

20-09-04, 05:05 PM

stage 2 cams will only cost 100 quid to do

northwind · 20-09-04, 07:04 PM

K3 cams work out £63 per cam, list price, plus the cam chain tensioner gaskets, which are a couple of quid. Mine are in the garage waiting for a quiet weekend.

The piston sets JHS used to sell were Wiseco... Wiseco UK gave me the same quote when I emailed them a couple of months ago.

JHS are using JE forged pistons now which James Holland reckons are a step up in quality, whether this is worth the extra £150 or so I don't know.

21-09-04, 01:40 AM

Don't forget that the bores will need to be either a. sleeved or b. re-plated after the re-bore. It is an alloy block that is coated specially from the factory as standard.

Just making sure you don't overlook that point.

Most gains will be made by making it breathe better. just increasing capacity without doing any work on the induction/exhaust is ****ing in the wind.

Try running around the block breathing through a straw. Alterations will ned to be made to the lift or duration of the cams to give you a real benefit. Naturally the fuelling and air filter needs attention too.

21-09-04, 07:22 AM

and you thought it was going to be simple

21-09-04, 12:10 PM

Lol
never said it would be simple!

The air and exhaust were a seperate mater and were going to get done at the same time i just didnt mention it,

Whats this about the k3 cams??
iv heard a bit but not entirly sure!
I might end up just saying screw it gettin the tl any way!

Alex

northwind · 21-09-04, 06:54 PM

I could be wrong, but I don't believe the 700cc bore-out involves either of those processes, juts poring and polishing. The bigger ones specify that they need new liners, but the 700cc doesn't...

K3 intake cams have the exact same lift and duration as the Yoshi stage 2 intake cams, and then you transfer your original intakes to the exhaust side (as the intakes have the same specs as the Yoshi stage 2 exhausts) A search for K3 AND cam should get you a massive old thread on the subject...

20-09-04, 12:35 PM	#1
454697819 Guest Posts: n/a	For all those wanting 700cc Hey all Recently have become very interested in tuning the sv but doing big dtyle using the engine not bolt ons! Jhs 700cc kit is very expensive i thought and so as i will be doing all the labout myself i would investiget wiseco pistons! I have found a dealer in england called www.wiseco.co.uk who will according to the price list supply a 700cc kit for 144.64 (i assume plus vat) = £167.70! plus a rebore at say 30 - 40 quid, thats just over £200 squid for more cc! then i can start with jet kits etc!! this includes, pistons rings, clips, wrist pins and head gasket! seems good to me! I estimate it will take about a week to do myself, including getting rebored to suit! acording to the jhs website the 700 kit gives 74bhp at the back wheel! ill get mine dynoed before and after! I think this wil be the route i take! Oh im tuning as i wont be getting a tl anymore cause it will be £947 tpft! over the 400tpft i will probably pay when i tune the sv! Any questions feel free to ask, or visit the website, look through the online catologue and then search on the price list the code!

20-09-04, 04:07 PM	#3
454697819 Guest Posts: n/a	Yep It states that they are standard compression! however whil the engine is in that many pieces i will probably fit the ignition advancer, not surebout the cams though, might be able to get the reground rather than having to get newer or exchange ones. however could double the cost and put it out of my price range if i need cams aswell! I was questioning wether i could get away with re shmming, but to what i have no idea! Still in reaserch and **** up stage! Alex

20-09-04, 07:04 PM	#6
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	K3 cams work out £63 per cam, list price, plus the cam chain tensioner gaskets, which are a couple of quid. Mine are in the garage waiting for a quiet weekend. The piston sets JHS used to sell were Wiseco... Wiseco UK gave me the same quote when I emailed them a couple of months ago. JHS are using JE forged pistons now which James Holland reckons are a step up in quality, whether this is worth the extra £150 or so I don't know. __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

21-09-04, 06:54 PM	#10
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	I could be wrong, but I don't believe the 700cc bore-out involves either of those processes, juts poring and polishing. The bigger ones specify that they need new liners, but the 700cc doesn't... K3 intake cams have the exact same lift and duration as the Yoshi stage 2 intake cams, and then you transfer your original intakes to the exhaust side (as the intakes have the same specs as the Yoshi stage 2 exhausts) A search for K3 AND cam should get you a massive old thread on the subject... __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

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20-09-04, 03:58 PM	#2
simon-temple Guest Posts: n/a	Just a thought what will the compression be? I know you are increasing the width of the bore but if the pistons at TDC are flush with the top of the cylinder the compression will increase. This may give problems with pre-ignition no? I'm not sure but thought it's worth mentioning. Keep us up to date with the project as it goes along. Simon

20-09-04, 04:21 PM	#4
BURNER Guest Posts: n/a	What about the cams? You much for those? I'm running 73 bhp on the back wheel already with just can, jetting and K&N. I'm not sure going to 700cc is worth it for just one pony....

20-09-04, 05:05 PM	#5
weegaz22 Guest Posts: n/a	stage 2 cams will only cost 100 quid to do

21-09-04, 01:40 AM	#7
PeterM Guest Posts: n/a	Don't forget that the bores will need to be either a. sleeved or b. re-plated after the re-bore. It is an alloy block that is coated specially from the factory as standard. Just making sure you don't overlook that point. Most gains will be made by making it breathe better. just increasing capacity without doing any work on the induction/exhaust is ****ing in the wind. Try running around the block breathing through a straw. Alterations will ned to be made to the lift or duration of the cams to give you a real benefit. Naturally the fuelling and air filter needs attention too.

21-09-04, 07:22 AM	#8
simon-temple Guest Posts: n/a	and you thought it was going to be simple

21-09-04, 12:10 PM	#9
454697819 Guest Posts: n/a	Lol never said it would be simple! The air and exhaust were a seperate mater and were going to get done at the same time i just didnt mention it, Whats this about the k3 cams?? iv heard a bit but not entirly sure! I might end up just saying screw it gettin the tl any way! Alex