Author Topic: 363 vs 370 (Read 20945 times)

RIDE-RED 350r · « **Reply #15 on:** May 30, 2014, 08:31:20 AM »

I know of one old Honda engine that actual displacement is as advertised.... the legendary ATC350X!!

Rupp250 · « **Reply #16 on:** May 30, 2014, 09:41:37 AM »

Quote from: FerrinMotorsports;35252

Somebody from another site seems to think so....I have run a 5mm stroker crank with a ESR 350 top end for three years and have yet to see a 363 pass me on the track......

That is a horrible analogy. Just because a 363 hasn't passed you doesn't mean jack squat.

I could be on my 363(i'm sure it make mucho power to your setup) and you could be on a stock 250r and still beat me it the style of racing you do.(Rider and experiance being the deciding factor here)

FerrinMotorsports · « **Reply #17 on:** May 30, 2014, 12:19:53 PM »

Quote from: Rupp250;35307

That is a horrible analogy. Just because a 363 hasn't passed you doesn't mean jack squat.

I could be on my 363(i'm sure it make mucho power to your setup) and you could be on a stock 250r and still beat me it the style of racing you do.(Rider and experiance being the deciding factor here)

Sorry Rupp I have to disagree with you......I highly doubt a stock 250r would even be close to staying with me and it's also nice that you know for a fact that your 363 puts out so much more power than mine...... How about you show up to Ventura Speedway in August and you back up your claim???....I still have never raced there so it would be an even challenge.......This is a friendly challenge....Don't make this into an ugly thread

PORTED R · « **Reply #18 on:** May 30, 2014, 12:50:22 PM »

Ferrin
I think Rupp was saying is that if he was on his 363 and u on a stock 250r ,depending on where u guys were riding ,u could beat him in certain places or vice versa
Bieng that Rupps bike is setup way more different then urs ,there's certain disadvantages and advantages on both ends

Rupp250 · « **Reply #19 on:** May 30, 2014, 01:39:44 PM »

Quote from: FerrinMotorsports;35325

Sorry Rupp I have to disagree with you......I highly doubt a stock 250r would even be close to staying with me and it's also nice that you know for a fact that your 363 puts out so much more power than mine...... How about you show up to Ventura Speedway in August and you back up your claim???....I still have never raced there so it would be an even challenge.......This is a friendly challenge....Don't make this into an ugly thread

I think you took my post way wrong. Read what Ported R said.

JesseA420 · « **Reply #20 on:** May 30, 2014, 01:41:55 PM »

i thought that simply due to cylinder design, a cp of similar size would make several more HP compared to a equally built pro-x or esr cylinder.

mandom250r · « **Reply #21 on:** May 30, 2014, 01:52:03 PM »

hey guys i just want to compare a 363 to a 370 thats it. if i had a 363 and a 370 that i could race around the track or in a drag race i want to know which one is faster.

Mickkey82984 · « **Reply #22 on:** May 30, 2014, 01:52:12 PM »

Quote from: JesseA420;35342

i thought that simply due to cylinder design, a cp of similar size would make several more HP compared to a equally built pro-x or esr cylinder.

I would say this is true if you have the same porting,pipe, and setup but I would guess a Drag ported esr or prox would more than likey have more than say a dune ported sphynx of the same cc's.

mandom250r · « **Reply #23 on:** May 30, 2014, 01:53:58 PM »

Quote from: JesseA420;35342

i thought that simply due to cylinder design, a cp of similar size would make several more HP compared to a equally built pro-x or esr cylinder.

yea lets keep CP cylinders out of this also because we all know they will produce more power

Mickkey82984 · « **Reply #24 on:** May 30, 2014, 01:55:38 PM »

Quote from: mandom250r;35343

hey guys i just want to compare a 363 to a 370 thats it. if i had a 363 and a 370 that i could race around the track or in a drag race i want to know which one is faster.

I'm no expert but what I've been told is the rod angle on the 5mm crank is harder on the piston skirts than the 4mm crank, thats really the only differnece that I've heard of.

JesseA420 · « **Reply #25 on:** May 30, 2014, 02:06:31 PM »

Quote from: mandom250r;35345

yea lets keep CP cylinders out of this also because we all know they will produce more power

i just meticuliously read through ur OP, i see what your saying now i thought when speaking of the 344 and 363 you were speaking in relation to a cp, due to just recently reading arlans post on how you want a stroker to actually use a cylinder designed for the stroker crank: http://trx250r.org/threads/2423-Stoker-Engines

in terms of building a +4 or a +5 prox, im sure the comparisions are negliable, except for the fact that the +5 there is alot of labor involved, compared to the out of the box +4.

Rupp250 · « **Reply #26 on:** May 30, 2014, 03:04:54 PM »

Quote from: mandom250r;35343

hey guys i just want to compare a 363 to a 370 thats it. if i had a 363 and a 370 that i could race around the track or in a drag race i want to know which one is faster.

ALL things being equal. There is no replacement for displacement.

rsss396 · « **Reply #27 on:** May 30, 2014, 03:14:39 PM »

you could probably have the same builder build a 363 motor and 370 motor and I bet there will very little if any difference in the 2 motors, the 4mm stroke stroked crank from Hot rod is a tough deal to beat so spending more money for 1mm more stroke may not give you any return on your money.
There is allot more to making a motor run fast than just adding more stroke or bore to a motor.

mandom250r · « **Reply #28 on:** May 30, 2014, 03:28:54 PM »

would you say that a 363 vs 370 is like comparing it to a short rod vs long rod engine?

FerrinMotorsports · « **Reply #29 on:** May 30, 2014, 05:20:11 PM »

Quote from: rsss396;35361

you could probably have the same builder build a 363 motor and 370 motor and I bet there will very little if any difference in the 2 motors, the 4mm stroke stroked crank from Hot rod is a tough deal to beat so spending more money for 1mm more stroke may not give you any return on your money.
There is allot more to making a motor run fast than just adding more stroke or bore to a motor.

Amen to that!