Brent Davis
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posted September 30, 2007 11:00 AM
 Edited By: Brent Davis on 30 Sep 2007 12:01
True Compression Ratio of the ZX-14
Since the '08 "MAY" not be in the future for a purchase for me, I called Bob Carpenter to ask about building me a 1415 or a 1445 for $6000 in/out the door. He told me that after the build, I would have 14:1 compression which is one full point over a stock 14......I said that Kaw advertises 12:1 and he said that he's had more than enuff 14's in the shop and they are indeed 13:1 compression ratio.
Thought I'd share what I was told by Bob Carpenter.
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davisag
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posted September 30, 2007 11:09 AM
hi
just do not believe that as j&e 13.5-1 piston kit would be worthless, if std was 13.1
art
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bayou boy
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posted September 30, 2007 11:16 AM
i know that's not true, i have a 1415, it 's only 13-5-1
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Stage XXX Mr Turbo ZX14
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posted September 30, 2007 11:19 AM
12.85 :1 was mine when is was checked before we did the turbo piston kit and lower the compression for the boost.
Brent, why not take the 6 grand and do a stage 1 turbo and get around 270 hp? how much hp are you going to get from a 1445 kit?
XXX
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iflyems
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posted September 30, 2007 11:42 AM
Not that much..... 
Nice thing about turbo's is you can always add on later and increase your hp from say 300, to 400hp, or even more.
Once you get the big bore...thats pretty much it.
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Brent Davis
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posted September 30, 2007 11:49 AM
Well I see the point but I also see iflyems blow his engine with his turbo kit installed on the stock engine.
Plus I wanna see more ppl with turbo kits out on the street before I make a decision on that. Apparently the Mr. Turbo kit is a bust as of lately so that kit is not an option. Heck even after iflyems had his motor rebuilt he has since gone to a external wastegate but Harry told me the WG's that are mounted on the turbo is the way to go but now I see different........LOL. Which is it I say? I guess just wait and see what happens with everyone's kits.
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Brent Davis
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posted September 30, 2007 11:51 AM
quote:
i know that's not true, i have a 1415, it 's only 13-5-1
What isn't true? That a stock 14 isn't 13:1 or that a 1415 from Carpenter won't be 14:1?
Either way I guess Bob is telling me a lie hugh? Who's 1415 kit do you have anyways?
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Stage XXX Mr Turbo ZX14
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posted September 30, 2007 12:05 PM
why are you calling Mr Turbo kits a bust?
XXX
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Brent Davis
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posted September 30, 2007 01:41 PM
Well from Greg's site over on zx14.net, he is now not selling the kits anymore for reasons that he didn't say on the forum. How has your kit faired so far though?
Is your motor built with aftermarket rods and such stage XXX?
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Stage XXX Mr Turbo ZX14
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posted September 30, 2007 02:09 PM
Brent,
The reason for the kit not being sold over there was not gregs call, it was Mr. Turbos, i cant speak for him however in dealing with Terry, lets just say that Greg was not representing him very well to put it mildly. Terry has to much integrity to sit back a let someone mis-represent him. As far as my kit( stage 3) and TG's kit (stage 2) they are put out huge numbers with no issues on the dyno.
To answer you question about the stage 2 kit and the stage 3 (XXX) kit, is not the aftermarket rods or pistons, it is the amount of boost. Stage 2 kit will handle around 20lbs of boost (close to 400 hp and 200lbs of torque) The stage 3 kit will be able to handle 30 to 35lbs of boost ( 500+ hp and 300+ lbs of torque controlled by a electronic progressive boost controller to help manage the power. Also mine has a more aggressive ball bearing turbo, dump pipe, lowered Adams oil pan, custom suspension upgrades, scavenge pump, any many more custom Mr Turbo Tweaks. I will be posting numbers from the dyno and the track in the next week, TG and I are headed down there to pick them up and go to the Texas Mile this week, and then head to the Drag Strip before heading back to the Midwest with them.
XXX
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Brent Davis
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posted September 30, 2007 03:31 PM
Oooooh K then. Well keep me posted on how well your kit works out.
Is your motor stock though?
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Stage XXX Mr Turbo ZX14
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posted September 30, 2007 03:53 PM
We kept the stock bore, but had custom pistons made for it. Carrillo rods. But with his stage one kit you can use your stock motor without issues.
XXX
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SteddyTeddy
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posted September 30, 2007 04:00 PM
Mr Turbo has a nice add on dragbike.com for the ZX14 kit.
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iflyems
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posted September 30, 2007 04:13 PM
First off I didn't blow the motor, I spun the #3 rod bearing. The cause was a combination of too many dyno runs, and oil starvation from the crappy stock oil pan, plus the #3 rod bearings on almost all the ZX14 in the same lot as mine where/are tight.
ZXBob is running his ATP street kit at around 7lbs on pump gas without any issues whatsoever. Internal wastegate and all.
I went with the external waste gate so as to be able to use more boost, and also to use a boost controller. You can't use a boost controller on an internal waste gate.
As I said before Brent, big boar kit is a waste of money. Step up to the plate and get a turbo. If you need to mod your motor to feel safe, just pay more and get it done, or don't run more than 7 or 8lbs of boost. You'll still make about 50hp more than a big boar kit, for the same money.
Then, when you can afford it, get the motor done like I did and run with the big boyz....
There is nothing wrong with the Mr. Turbo kit that I know of. To each his own. Call Terry at Mr. Turbo and call Harry at ATP. See which kit is going to work best for you and your budget. Ask Zxbob/Turbobob how his has been running. Or any of the other 22 street kits that are out there from ATP, and still going strong. None of those bikes has had a single issue.
Brent, its gonna be pretty embarrasing to spend soo much money on your big boar, just to have a guy crank his boost up just a little, and literally walk away from you like your on a 600. Save up your money and play with the blown boys, you won't regret it.
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Brent Davis
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posted September 30, 2007 06:28 PM
So you're saying that I need to buy the adams performance oil pan and install a turbo kit and then there possibly won't possilby be a #3 rod or any at that problems?
BTW, it won't be an embarrasement to me at all to go with a big bore motor AND a turbo kit. LOL.
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Stage XXX Mr Turbo ZX14
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posted September 30, 2007 06:44 PM
Brent,
think of it like this, you can spend the 4-6 grand and get a big bore kits with all the goodies, and expect maybe 20 - 25 hp or spend the money for the stage one turbo and get around 10 - 12 hp per pound of boost (7lbs = about 80hp), in addtion to that, by boring you are asking for overheating issues.
XXX
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bayou boy
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posted September 30, 2007 07:53 PM
if u want to real comp , go to je, it's on there, or u can talk to there reps, i want say he's lieing to u, or not, i just know what i got,
lv email address , an i will send u info. not trying to get on u, or what ever ,but just trying to make sure u get what u pay for
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BlackMagic14
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posted September 30, 2007 11:22 PM
Compression will increase in an engine over timke (to some extent) do to the build up of carbon on the piston stock may be 12:1 but after 5 or 6000 miles it would be at least 12.5 maybe a little more
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jarhead
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posted September 30, 2007 11:35 PM
I am not sure that it is the same with these new bikes but on the big block KZ's if the kit was a 15.5:1, your real compression was usually higher.
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