buying advice for 2007 k7 gsxr 750 - Suzuki GSX-R Motorcycle Forums Gixxer.com
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post #1 of 15 (permalink) Old 04-14-2019, 04:03 PM Thread Starter
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buying advice for 2007 k7 gsxr 750

Hello I am new to these forums.

I am thinking about buying a gsxr 750 k7 2007 in the uk.

It has 27k on the clock, and has had various easy mods done to it, screen, levers, bungs, hugger etc, standard stuff.
I would only be riding it on the street.

It still has the original exhaust on it.

I just wondered if anyone had any advice as to what to look for or be aware of please when looking it over?

I will be test riding it.

Have come from a Fireblade, this will be my first Suzuki potentially.

Is 27k a lot for these engines? You see older bikes with more on, just wondered how strong they were engine wise.

Does the k7 model have any quirks worth knowing about?

Thanks for any advice.
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post #2 of 15 (permalink) Old 04-15-2019, 07:31 AM
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Re: buying advice for 2007 k7 gsxr 750

Best you start with an introduction in ‘starting line’ section ... asking for info/help before that is bad manners
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post #3 of 15 (permalink) Old 04-16-2019, 09:52 AM
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Re: buying advice for 2007 k7 gsxr 750

Quote:
Originally Posted by thegsl View Post
Hello I am new to these forums.



I am thinking about buying a gsxr 750 k7 2007 in the uk.



It has 27k on the clock, and has had various easy mods done to it, screen, levers, bungs, hugger etc, standard stuff.

I would only be riding it on the street.



It still has the original exhaust on it.



I just wondered if anyone had any advice as to what to look for or be aware of please when looking it over?



I will be test riding it.



Have come from a Fireblade, this will be my first Suzuki potentially.



Is 27k a lot for these engines? You see older bikes with more on, just wondered how strong they were engine wise.



Does the k7 model have any quirks worth knowing about?



Thanks for any advice.
27k is nothing. Use your common sense when test riding it, keep an eye out for any mods that could be 'patch jobs'.
Check if the the secondary butterfly valve is still hooked up and running
Last 'major' service due was due at 24k with valve clearances etc, if they had it done you're laughing.
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post #4 of 15 (permalink) Old 04-16-2019, 01:45 PM
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Re: buying advice for 2007 k7 gsxr 750

Theres a recall on the master cylinder. Might need to take it in. Those rectifiers are known to fail due to over heating. You will probably want to relocate it before that happens.
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post #5 of 15 (permalink) Old 04-16-2019, 03:12 PM
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Re: buying advice for 2007 k7 gsxr 750

Go with a K4 or K5 I love them haha. K6 and K7 are the only bikes I'm aware of with "known issues".
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post #6 of 15 (permalink) Old 04-17-2019, 01:59 AM Thread Starter
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Thanks for all the replies, really appreciated.

In answer to the points raised:-

1. It only has a partial service history. From what I can tell no mention of a 24k service / valve clearances done.

2. I take it the secondary butterfly valve is in the exhaust? One mod I would do would be to replace / decat the exhaust as I am assuming it's an easy mod where you lose weight and gain power? Maybe some kind of servo buddy needed?

3. Does the master cynlinder recall still apply, would Suzuki still take it in?

Thanks for any further advice. Hopefully I ride it tomorrow.
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post #7 of 15 (permalink) Old 04-17-2019, 02:39 AM
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Re: buying advice for 2007 k7 gsxr 750

Secondary butterfly is located on the header pipes before the cat, more something to consider as some people completely disable it. You shouldn't need a servo buddy for the cat delete unless you're changing the header pipes.

+1 on the master cylinder and reg/rec (common problem is due to it's proximity to the engine; prone to overheating). Easy to relocate if required.
Pic of the recall below for, unsure if it would still be honoured but you can do a VIN search on their website?
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post #8 of 15 (permalink) Old 04-19-2019, 11:38 AM
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Re: buying advice for 2007 k7 gsxr 750

I would be worried that the stock can is still on there with 27k miles. He could be hiding something. Because when I bought my 06 750, it had a sputtering problem that sounded bad after I took the stock exhaust off with an aftermarket. I didn't hear the sputtering at first with the stock exhaust on it, but it definitely had a hesitation issue between 4-8k rpms.

Or it could be simply the owner likes quiet.
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post #9 of 15 (permalink) Old 04-20-2019, 06:06 AM Thread Starter
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Re: buying advice for 2007 k7 gsxr 750

Thanks for the replies everyone, really appreciated.

The test ride went well, I was surprised at how easy and comfortable it felt, seemed to be a good fit right
from the start. Gruntier than I expected in high gears at low revs, better stock fuelling than my old blade
for sure I thought.

It has not had the valve clearances done so that will be the first thing I get done once I take possession.

As for the stock exhaust, this bike as had a few owners, they have done other mods just never the exhaust for
whatever reason. I had the best look over the bike I could, couldn't see anything obvious, rear sproket looked
good, some wear and tear overally but it is not new.
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post #10 of 15 (permalink) Old 04-26-2019, 03:01 AM
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Re: buying advice for 2007 k7 gsxr 750

Quote:
Originally Posted by thegsl View Post
Thanks for the replies everyone, really appreciated.



The test ride went well, I was surprised at how easy and comfortable it felt, seemed to be a good fit right

from the start. Gruntier than I expected in high gears at low revs, better stock fuelling than my old blade

for sure I thought.



It has not had the valve clearances done so that will be the first thing I get done once I take possession.



As for the stock exhaust, this bike as had a few owners, they have done other mods just never the exhaust for

whatever reason. I had the best look over the bike I could, couldn't see anything obvious, rear sproket looked

good, some wear and tear overally but it is not new.
Pulled the trigger on it?
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post #11 of 15 (permalink) Old 04-26-2019, 01:10 PM Thread Starter
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Re: buying advice for 2007 k7 gsxr 750

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Originally Posted by dobby View Post
Pulled the trigger on it?
I did pull the trigger on it yes. I am very happy with it so far.

Did some ringing around, it has had the master cylinder recall done on it in 2014 so that is fine. No one could confirm
the valve clearances have ever been done. However, there is a line of thought from some folk that they typically
do not need doing on Suzukis, and if the bike is riding okay, then to leave it. Kwakkers and Yams need them doing, but
not Suzukis. Any thoughts anyone on that idea? Any experience with doing clearances on Suzukis that really did need doing?

I will be getting them done though shortly during a full service, just for piece of mind really even if they do not need it but
I am interested if anyone does have any good or bad experience with doing them on Suzukis.

As for the stock exhaust, I really do not see it as an issue, and like the noise it makes. I will replace it one day no doubt.
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post #12 of 15 (permalink) Old 05-04-2019, 08:09 PM
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Re: buying advice for 2007 k7 gsxr 750

Quote:
Originally Posted by thegsl View Post
I did pull the trigger on it yes. I am very happy with it so far.



Did some ringing around, it has had the master cylinder recall done on it in 2014 so that is fine. No one could confirm

the valve clearances have ever been done. However, there is a line of thought from some folk that they typically

do not need doing on Suzukis, and if the bike is riding okay, then to leave it. Kwakkers and Yams need them doing, but

not Suzukis. Any thoughts anyone on that idea? Any experience with doing clearances on Suzukis that really did need doing?



I will be getting them done though shortly during a full service, just for piece of mind really even if they do not need it but

I am interested if anyone does have any good or bad experience with doing them on Suzukis.



As for the stock exhaust, I really do not see it as an issue, and like the noise it makes. I will replace it one day no doubt.
Had mine last done at the 24k major for peace of mind as per service manual but I've heard my uncle who races say the same thing.
I guess as with most of the maintennance, it becomes more of a preventative measure if you're checking them every 12000k's. Only problem with that is Mr. Mechanic and their labour charges .
If you're half handy with a spanner and have the patience, plenty of well detailed videos about checking clearances/changing shims around.

Congrats on the purchase.
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post #13 of 15 (permalink) Old 05-05-2019, 02:51 PM
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Re: buying advice for 2007 k7 gsxr 750

My K6 750 had it's clearance checked as per the official service interval at 24000km (15K miles), but didn't need adjusting (it did at 48/30)

What is worth attention is keeping your ears open for rattling at cold start, coming from the right side, that means you cam chain tensioner is going out
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post #14 of 15 (permalink) Old 05-05-2019, 05:21 PM
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Re: buying advice for 2007 k7 gsxr 750

When I did my valves, one or two were close to out of spec but they were all within the clearances. I swapped out a few to keep them all closer to the center of spec.

This is just my personal opinion, but for the money, youre best off just replacing the head cover gasket. It may not need it, but it sure would be a pain in the ass to take it all apart later this year due to an oil leak.

As a matter of fact, here are the valve numbers I got on my K7 750 at about 22ish thousand miles on the clock:

Well, I finally got around to verifying time, and checking the valves. The feeler gauges I got increment by 2 so any of these numbers could go up one, but are as follows. (mm)
1. In: . 08/.08 Ex: . 23/.23 2. In: .1/.1 Ex: .23/.23 3. In: .1/.08 Ex: . 2/.23 4. In: .06/.06 Ex: .23/.16 The number on the left represents the cam lobe on the left of each pair. They seem super sporadic, and some are too tight for sure. I feel like before I get shims to adjust them, I should get different feeler gauges maybe? Something a little more accurate.
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Last edited by maniac1886; 05-05-2019 at 05:24 PM.
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post #15 of 15 (permalink) Old 05-06-2019, 12:31 PM Thread Starter
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Re: buying advice for 2007 k7 gsxr 750

Thanks for the replies everyone, been really helpful.

Have added the cam chain tensioner to the list and edited it a bit.

I do not have the time or skill really to start doing the valves myself, I know there are videos etc but just a bit too much to consider at the moment. Maybe one day.

The bike is riding/running well I think anyway, part of me thinks just keep riding it for the time being, but once all the items have been done it will be interesting to see if it feels any different (hopefully not worse ... :-( )

It has never had the reg/rec moving, I am all for moving it, ebay for a bracket or is it make your own? Do people tend to keep them on the same side just move them a bit backwards?
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