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View Full Version : Mazworx to debut SR25DET Race Motor



Zero4SPL
12-28-2006, 12:27 PM
After a full season of R&Ding the SR, we have came up with a formula to build an SR that would have the capability to make 1100+hp using a GT45R. Of course we are going to build mild versions to fit ones budget. Here's a couple quick specs of the motor. We will have an official release when we have our first motor complete.

Mazworx SR25DET

92mm Bore x 92mm Stroke
Golden Eagle Sleeves
Custom CP Pistons
Carrillo Rods or Custom Aluminum Rods
CNC Oil Port Groove
CNC Stroker Clearance
CNC 1/2" Head Stud Machining
Mazworx 92m Integrated O-Ring Copper Headgasket
CNC Ported Head
CNC 92mm Opened Combustion Chambers
Head Prepped to Handle Tomei 280 x 12.5mm Cams @ 11k rpm & 50 lbs of Boost

We are currently working on our first motor now. Alot of custom tooling is being made to build this thing. We believe that all our hard work last race season gave us enough data to build a very reliable motor at high hp. Here is a few pics:

http://www.mazworx.com/pictures/torque_plate.jpg
Custom Torque Plate Machined inhouse

http://www.mazworx.com/pictures/milltronics_1.jpg
Our CNC Mill

gunluvS14
12-28-2006, 01:12 PM
impressive

Kim_Jong_Il
12-28-2006, 01:14 PM
Monster! Didn't realize you guys had a CNC mill in-shop.

scotheocelot
12-28-2006, 02:09 PM
:bowdown: :bowdown: :bowdown: :bowdown: :bowdown:

Please post more pics when you get the chance!

whitey240
12-28-2006, 02:20 PM
badass!

champa
12-28-2006, 02:56 PM
awesome

Nikeboy355
12-28-2006, 03:11 PM
Pushing the limits of the SR... I like it...

Is a 3.0L KA next?

hybridynamics
12-28-2006, 04:05 PM
who is this fancy motor for? hehehe

"2.5l of 2jzgte abusing Nissan Bliss"

RyanZ06
12-28-2006, 04:47 PM
who is this fancy motor for? hehehe

"2.5l of 2jzgte abusing Nissan Bliss"

LOL.. Lets not get ahead of our selves here. :D :D

Kim_Jong_Il
12-28-2006, 04:55 PM
who is this fancy motor for? hehehe

"2.5l of 2jzgte abusing Nissan Bliss"

So they're only shooting for high 10's with this SR?:26:

janders211
12-28-2006, 05:34 PM
That's one hell of a spacer. What do you think it'll drop your compression to? :26:
http://www.mazworx.com/pictures/torque_plate.jpg

hybridynamics
12-28-2006, 05:36 PM
So they're only shooting for high 10's with this SR?:26:


haha... i guess you're right. it's sort of an inside joke between us...

slideways2004
12-28-2006, 08:28 PM
That's one hell of a spacer. What do you think it'll drop your compression to? :26:

lol. i was gonna say the same thing. how high can this motor be reved?

RyanZ06
12-28-2006, 08:53 PM
haha... i guess you're right. it's sort of an inside joke between us...

yeah, because on the outside of the joke, it seems like you think maxworx's 2.5 liter SR is going to beat 7 second supras... :rolleyes: :D

Rim_Bender
12-28-2006, 09:06 PM
That is INSANE

im speachless

awsome work, cant wait to see one together and some numbers

240Shorty
12-28-2006, 09:46 PM
yeah, because on the outside of the joke, it seems like you think maxworx's 2.5 liter SR is going to beat 7 second supras... :rolleyes: :D

hmm...IF they are to get 1100whp out of a sr motor and were to run it with an automatic tranny what do YOU(the baddest motha f-er on this board) think it would run in a 2600lb car?

As opposed to a 3400lb supra with 1400whp and an auto tranny ?

hybridynamics
12-28-2006, 09:46 PM
yeah, because on the outside of the joke, it seems like you think maxworx's 2.5 liter SR is going to beat 7 second supras... :rolleyes: :D

i'm really not going to even try and get into a pissing contest with you... you win... supras are great!

240x2
12-28-2006, 10:13 PM
I think you guys are low balling,1100 whp is a low balling # ,common now tell us the real #'s MAZX ...with 11,000 rpm for sakes you know its gonna hit more than that,I have faith on it.BTW you guys are badass! Congrats!

dorimaster
12-28-2006, 10:24 PM
I sure hope thier car is far lighter than 2600lbs, my car was that heavy when i had almost stock everything, a drag car with cage and driver should not be more than 2200.

Pete

KB240SR
12-28-2006, 11:09 PM
WOW!!! This engine is gonna be amazing.

MATT_BACK_VASS
12-28-2006, 11:34 PM
Keep in mind their car is built to specific rules regarding what weight can be removed from it, and what can and cannot be done in general. So they can't just gut the car completely and let it rip

RyanZ06
12-29-2006, 12:18 AM
i'm really not going to even try and get into a pissing contest with you... you win... supras are great!

Bah -

Pissing match not intended. I just wondered if your projected numbers with this motor are indeed enough to run with the best 2JZ's as you claim?

No hard feelings, hell, I'd be excited to a see an SR jump in the ring with the various 2jz powered drag cars around the country. :26:

MATT_BACK_VASS
12-29-2006, 12:35 AM
It will be hard for them to climb in the same ring. the SR's are in turbo 4, the 2J's are in turbo 6

hybridynamics
12-29-2006, 12:40 AM
Bah -

Pissing match not intended. I just wondered if your projected numbers with this motor are indeed enough to run with the best 2JZ's as you claim?

No hard feelings, hell, I'd be excited to a see an SR jump in the ring with the various 2jz powered drag cars around the country. :26:



first off, we (mazworx and us(grammar?)) have to build our cars around a strict set of rules that are limiting what is possible with this motor. we're not even going to be running a GT45R, we can't, we're limited to a GT4294R.

now, stick this motor in a modified class car, where you can run a GT45R and some methanol and i do believe a 7 second pass is well within reach. hell, rau is pretty consistent 7.0x/6.9x time slips, and whats he running? oh a 2.0L.. and you have to love his 3 liter eater sticker on the side of his car...

seriously man, it was a joke and you're way too worried about it. our car will run what we're trying to run with it. we were never claiming 7 second timeslips with it. hell, we have to weigh 2900 lbs and can only run a 70.77mm inducer turbo. do you really think that is good for 7's?

hybridynamics
12-29-2006, 12:42 AM
It will be hard for them to climb in the same ring. the SR's are in turbo 4, the 2J's are in turbo 6


i kind of actually like what the NDRA is doing with their Turbo street class and unlimited street class next year. only think i'm bummed about is not going up against dan dixon with the AAP supra. his car is sort of the one who gave us some inspiration for this season and trying out some new things.

RyanZ06
12-29-2006, 12:42 AM
hell, we have to weigh 2900 lbs and can only run a 70.77mm inducer turbo. do you really think that is good for 7's?

Definitely not, that's why I wondered if you did. ;) Good day :)

BoostedVR4
12-29-2006, 09:02 AM
I would be interested in having this done to my S14 block/head, but I can imagine the final $,$$$ will make my heart seize....

Zero4SPL
12-29-2006, 03:40 PM
Here's a little more pics:

http://www.mazworx.com/pictures/block_machining.jpg
Here is the block as it's getting the oil grooves machined and the bottom of the cylinders notched for the aluminum rods.

http://www.mazworx.com/pictures/oil_groove.jpg
This is the oil groove. It is needed for the new bearings.

http://www.mazworx.com/pictures/main_bearings.jpg
Here's the new race bearings (left) with the extra oiling holes compared to the standard bearings (right). Notice how the groove on the bearing goes 3/4 of the way around for superior oiling.

http://www.mazworx.com/pictures/rod_bearings.jpg
Here's is the race rod bearing compared to the standard rod bearing. It is made of a harder material and 2mm wider. Machining to the rods is need to fit these.

More to come.

hybridynamics
12-29-2006, 03:45 PM
mark, i am getting real excited seeing this...

Martin XAT
12-29-2006, 10:02 PM
block 4 of the 8 holes per cam oiling tube... good for a tiny bit more flow :D

Martin
XAT

datsqik
12-29-2006, 10:19 PM
Very interesting.Keep those pics rolling in.

Doluck
12-30-2006, 12:37 AM
I'm loving it!!!

TheWolf
12-30-2006, 08:58 AM
I'm curious. why the elaborte oiling system? problems with pressure or flow?

forcefedS13
12-30-2006, 09:26 AM
Beautiful Mark. I am rooting for you, we all need to pray these timeslips are unimaginable. Then we can stop hearing so much $hit from the Honda guys.

Zero4SPL
12-30-2006, 09:35 AM
I'm curious. why the elaborte oiling system? problems with pressure or flow?

At high hp and high rpms, the rod bearings demand more oil. The main reason for spun rod bearings and rods through the block is lack of oil to the rods. We are learning this the hard way (our race car). So now we can offer this to the SR community already tested and proven.

scotheocelot
12-30-2006, 09:44 AM
mark, i am getting real excited seeing this...

You can say that again! I get a woody just looking at the pictures!

Mark, Can you still do the bearing machining to the block and rods even if the customer doesnt want to stroke/bore it to a 2.5? I like the added benefit of extra lube but I would still wanna keep it a 2.0 or 2.2. Do you have an idea of how the customer will get this done? Will we have to send you our block on a crate?

Scott

TheWolf
12-30-2006, 09:52 AM
Have you considered the centrifugal forces at work on your oiling system? mainly the rods journals resistance to oil at high rpms and equalizing the supply pressure. I think you'll find higher pressure is required and with those modifications higher flow will as well. What GPM rating is your drysump?

2slow240sx
12-30-2006, 10:21 AM
Dangit! All you guys are makin' me want an SR now...

Zero4SPL
12-30-2006, 12:48 PM
You can say that again! I get a woody just looking at the pictures!

Mark, Can you still do the bearing machining to the block and rods even if the customer doesnt want to stroke/bore it to a 2.5? I like the added benefit of extra lube but I would still wanna keep it a 2.0 or 2.2. Do you have an idea of how the customer will get this done? Will we have to send you our block on a crate?

Scott

We can do this to any SR block no problem. All we would need is a bare block. If you are not making 1000hp, the standard size race rod bearing will sufficient, so we would not have to machine your rods.

Pretty much any individual process we do to our race motor will be available to the public.

Martin XAT
12-31-2006, 12:56 AM
mark has basically taken the gtir design to a whole new level. the nismo gtir bearing is grooved and triple holed... and the block has the slits on the main upper bores. wider bearings factory..1/2 inch studs.. .... there are so many "race" inovations in the rnn motor design most of us in s13 tech have not seen this b/c we do deal with rnn motors. i am assuming dry sump mark ? man if I had a mill........ beautiful work man.

martin
xat

Zero4SPL
12-31-2006, 11:48 AM
mark has basically taken the gtir design to a whole new level. the nismo gtir bearing is grooved and triple holed... and the block has the slits on the main upper bores. wider bearings factory..1/2 inch studs.. .... there are so many "race" inovations in the rnn motor design most of us in s13 tech have not seen this b/c we do deal with rnn motors. i am assuming dry sump mark ? man if I had a mill........ beautiful work man.

martin
xat

Martin,
The GTi-R motors came with 12mm threads an still were a less of a course thread. The 1/2" head studs I use is a course (13 tpi) thread and uses about 1-3/4" of thread engagement.

We are not allowed to run dry sumps in the sportsman classes. But our alcohol modified motor will. We do offer dry sump kits for the SR as we are doing alot of prototyping right now with this motor.

Martin XAT
01-01-2007, 10:49 PM
Hmm.. wow.. I did not realize you were using that coarse of a thread. Big thumbs up on that. I called the rnn 1/2 because I use the JUN big studs on rnn motors (rarely ever do those) and they mic to .491" on the outer edge of the thread which is .019" thicker than a stock bolt on the bottom outer edge of thread. This is not a big difference but I call it 1/2" for all practical purposes. Running a full alchohol motor ??? wow 13.5:1 CR ????? I started to build a full e85 motor a year ago because of low cost of the stuff (even burning twice the rate it's cheaper than c16)... but that fad died and the closest distributor is at Cape Canevral. Maybe somone around here will carry it in the future so I can finish that project up.

Martin
XAT

Porschephile
01-11-2007, 03:27 AM
Sweet mother of GOD! This is awesome Mark! Thank you very much for the information. So you plan on offering this as a normal short/long block build? Any idea on an approximate price for a shortblock? If I were to buy one, I'd definitely want something a bit more "moderate" for ~8.5-9k rpm and maybe up to 600whp. Hehe, I think I shall have to do an Sr25det build for my 944! ;)

steve shadows
01-11-2007, 02:04 PM
Yeah between this and the Elisha Cuthbert Pictures im looking at via tab browsing im about 3 seconds from liftoff...very very nice guys. :p

tnd240
01-16-2007, 01:33 AM
I'd definitely want something a bit more "moderate" for ~8.5-9k rpm and maybe up to 600whp. Hehe, I think I shall have to do an Sr25det build for my 944! ;)

I've always thought an SR/944 Hybrid would make an efficient and palusible comination and I personally would support such an endevour.

Thank you
Jd
IMPORT SPECIALISTS
TND240@hotmail.com

NOSTALGIC_HERO
01-18-2007, 01:31 AM
martin, the main studs on gti-r are not 1/2" at least not the ones i had that were marked "54C"

they fit perfectly in the s13sr rwd block. and were purchased from courtesy nissan in 2001.

TEKVICIOUS
01-18-2007, 11:00 AM
That is very Poetic Steve.... :)
Haha