bottom end with a different head

heyitsstock · Post by **heyitsstock** » Mon Sep 29, 2008 2:41 pm

long story short....

a jdm b16b honda engine has 185hp...

a usdm gsr engine has 170? ( this is off hand)

if you were to use a bottom end of the 185hp motor and the head of the gsr... what would be the expected hp....

deff a noob question... and i know you can give me exact numbers... but just give me like an in theory idea to work with....

thanks

blue demon02 · Post by **blue demon02** » Mon Sep 29, 2008 3:36 pm

heyitsstock wrote:long story short....

a jdm b16b honda engine has 185hp...

a usdm gsr engine has 170? ( this is off hand)

if you were to use a bottom end of the 185hp motor and the head of the gsr... what would be the expected hp....

deff a noob question... and i know you can give me exact numbers... but just give me like an in theory idea to work with....

thanks

You do know this is not a Honda Forum right?

heyitsstock · Post by **heyitsstock** » Mon Sep 29, 2008 3:49 pm

o man thats it.... i new there was something

i just figured since most cars run basically the same way. ie the engine... some one could give me an idea.. if using a more powerful block than head when how would the collective hp be made

i forgot our neons dont have a head and a lower end

blue demon02 · Post by **blue demon02** » Mon Sep 29, 2008 3:58 pm

heyitsstock wrote:o man thats it.... i new there was something

i just figured since most cars run basically the same way. ie the engine... some one could give me an idea.. if using a more powerful block than head when how would the collective hp be made

i forgot our neons dont have a head and a lower end

There you go thinking again didn't your mom tell you not to do that?

Wenuden · Post by **Wenuden** » Mon Sep 29, 2008 3:58 pm

or it could be that not many of us are going to know compression ratios of those motors, whether those particular heads are vtec or not, or even care.

You'd probably get better, more knowledgeable answers on a Honda forum... LOL.

OB · Post by OB » Mon Sep 29, 2008 4:01 pm

There's no way to tell what your output would be w/o more info. I know a GSR motor is a B18, so it has longer stroke and more displacement. It also has a lower rev limit. The B16 probably makes it's peak power above the GSR's redline. With this in mind, the B16 block is a short stroke, 1.6L, and it has higher compression pistons. The magic is surely in the head and valvetrain. The head on a GSR isnt designed for high revs and wouldnt allow the bottom end of the B16 block to be used to it's potential. People often use the 1.8L short block with a 1.6L's head for a turbo motor, since the long stroke crank and low compression pistons can hold up to boost, while the head is bulletproof. Bottom line is, your best bet depends on what the motor will be used for. Turbo? NA? Low end Torque or peak HP?

bone-yard-racing · Post by **bone-yard-racing** » Mon Sep 29, 2008 4:03 pm

JDM engine is measured differently than USDM(no acc) and the engines also run differently (95-98octane fuel and non-mandated cats until about 1996 or so)

blue demon02 · Post by **blue demon02** » Mon Sep 29, 2008 4:06 pm

OK, to stop being a jerk. He is probably thinking of the known combo of taking a GSR head and putting it on the block out of a CRV. (forget the code for the CRV motor) Anyway If I remember correctly you can get like 220-250WHP out of that combo with out major work.

Wenuden · Post by **Wenuden** » Mon Sep 29, 2008 4:19 pm

is that the ls/vtec frankenstien engine?

OB · Post by OB » Mon Sep 29, 2008 4:25 pm

Technically putting any Vtec head on any non-vtec block is a frankenstein.

welchspro · Post by **welchspro** » Mon Sep 29, 2008 4:40 pm

I think the CRV uses the B20.

fixitmattman · Post by **fixitmattman** » Mon Sep 29, 2008 5:21 pm

Oh man, with some of the answers being thrown out here we're definately gonna get linked to a honda forum and get made fun of.

To make the answer short, you can't just put a 170hp head on a 185hp engine and expect things to work out nicely. That's not to say they couldn't but there's a lot of variables at play here before coming close to even getting an answer.

To get a more correct answer to the question you'll need to hit up the honda forums and search as to them this will be like asking will the SRT-4 turbo bolt up to the sohc head to us.

bone-yard-racing · Post by **bone-yard-racing** » Mon Sep 29, 2008 5:49 pm

Wenuden wrote:is that the ls/vtec frankenstien engine?

Yes but it works with any non-vtec block ls b16/b20/one or 2 others.
CRV is a B18 non-vtec I think.

mopar4life · Post by **mopar4life** » Mon Sep 29, 2008 6:44 pm

Neon>Honda in general........ der

blue demon02 · Post by **blue demon02** » Mon Sep 29, 2008 7:13 pm

mopar4life wrote:Neon>Honda in general........ der

Sorry but I don't agree. don't get me wrong I love my neon. But take a look at some of the Honda engines sometime. they are so much better designed then ours its pathetic. The new K motors are just sick.

mopar4life · Post by **mopar4life** » Mon Sep 29, 2008 7:39 pm

Maybe so as I dont mess with 4 pots. Not to bash but how would power at only 7K to redline be effective when you can make power throughout the range and have torque?

fixitmattman · Post by **fixitmattman** » Mon Sep 29, 2008 8:07 pm

blue demon02 wrote:they are so much better designed then ours its pathetic.

Debatable. May have been true in the past, but these days the game is a whole other animal.

heyitsstock · Post by **heyitsstock** » Mon Sep 29, 2008 11:28 pm

whoa jesus....

1. i realize i can get more info on a honda site... i just want to throw it on here

2. the car has
b16b CTR bottom end (that is the jspec civic type r... NOT THE INTEGRA TYPE R)
GSR HEAD.

it runs fine... im not asking if i CAN do this

3. i was just wondering if there was a ball park... but with the responses i got, i realized i was asking a loaded question since there are many variables that make a car run not just the bottom end and the head...

OB · Post by OB » Tue Sep 30, 2008 4:08 pm

Ballpark with no tuning would probably be right around the crank hp of the GSR engine. Somewhere in the low 170's. And if thats true, you're looking at about 135-145 whp, give or take. The head really makes no difference with power, unless it is ported or has a shorter deck, in which case you might have gained back some compression and will flow more air, making a few more ponies. What are the differences between the heads?

bone-yard-racing · Post by **bone-yard-racing** » Tue Sep 30, 2008 4:15 pm

blue demon02 wrote:
mopar4life wrote:Neon>Honda in general........ der
. they are so much better designed then ours its pathetic. The new K motors are just sick.

They arent and 10.5:1 compression and huge cams from factory will make anything look good

OB · Post by OB » Thu Oct 02, 2008 4:16 pm

^There you go. Just because Honda happens to tune some of their engines better from the factory in terms of specs, doesnt mean they're a better design. Look at the SRT-4. Very powerful from the factory. Forged internals and all the bells and whistles. The scary part is that it's cheaper than Hondas that are even near it's stock power level. A regular non VTEC 1.6L D series honda engine is FAR from a work of art. Everyone concentrates on the higher class honda engines, when they make cheap economy engines just like everyone else. Believe it or not, I think that the 2.0L SOHC engine in the Neon is far superior to Hondas bottom of the barrel engines. New or old. The 2.0L actually has some solid engineering behind it, and some decent technology for its time.

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bottom end with a different head

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