Mr si99

hey sup guys
I just recently bought a 99si and really feel the need for speed!!!!! but im not sure on how i should build it. I know comparing to the b18 block b16 make less power.... so i was thinking should i get new piston and upgrade to bigger size and if so how big can a b16 piston go (liter). Or should i just buy a GSR or LS block and use my b16 head and tranny? well doing that be any good. My fried also told me to use a b20 block with my b16 head it will make good power. Im really new at this and im not sure on what really to do I just want a couple of good suggestion. Also my friend say my rpm is to high.... 4000rpm at 70mph at 5th gear is it normal? if not wat can be causing it.

komat

b16 tranny has super short gearing
so its about right

http://www.ff-squad.com/tech/temp/Bgears.htm

as for speed just boost it and run it at 8-10psi

civictildeath

http://www.c-speedracing.com/h...c.php

b16 can be stroked and bored to a 1.8 l

compression ratio and boost are where the most power are.

high compression and boost = no no

what do you plan to do??

whats your budget??

how much power you want??

jfranknbeans

Budget?
Power?
Use? (what are you using it for? daily? super reliable? weekend warrior?)
Future plans?
Are you wanting stock look or do you want everyone to know?
Answer these ?'s and we can help you out

Mr si99

im going for stock look budget is around 3,000 to 5,000. future plan i want to swap a gsr but for now i just want to make this b16 fast because one thing my timing belt is loose, the previous owner put on skunk 2 cam gears but stock cam shaft.... and my friend say im loosing top end because of that. For some reason the car not running the way its suppose to so im looking for upgrade as cheap as possible for now maybe still using the b16 tranny with the b16 head and change the block to a b18c5 or b18a1 or b20 which one make more power using the stock tranny and head. thanks

EK k kay

Damn with a $3-5k budget you can slap on a nice turbo setup and be faster than you wanted to be.

Mr si99

that is near future not now but thats the budget that im willing and only willing to spend on this car ( i think). i like this b16 to be daily driven and a weekend warriror heh

jfranknbeans

First thing - have all regular maintenance done and fix what needs to be fixed. Then get a nice turbo kit with low boost. Great power and reliability (as long as you keep boost to reasonable level) . Then when you swap for bigger bottom end the turbo stays and you build the bottom to handle more power. 7 psi daily, turn it up for weekend racing.
That will but you right at or over $5k done right. 3700 for decent kit plus other upgrades and install
If you want all motor. Try ls vtec with type r final drive and lsd, that will be fast, fun and maybe a bit cheaper. But again whatever you do. don't short cut. do it right.
good luck. let me know if you need any more help spending money

Mr si99

ok turbo sound like a good idea for the future. What about the present which block is good to use with a stock b16head and tranny in my si? b18a1, b18c5, or b20 or if there is any other block that is good to use, just mention it.

B16aDasher

Buy a b18c short block and swap that in. That would be better IMO then the gsr swap.

simplegreenmachine

just boost it

Mr si99

can u please give me more explanation on why the b18c would run best with the stock b16 tranny and head please...

JDM_Ej

If you put a B18C block (non-itr) on your B16 head, it will actually lower your compression ratio, but you will make up for it with the torque increase. The best bet would probably to either boost it, or if you want to go N/A, get a ITR short block. Its built for the torque of the B18 and the revs of a B16, so you will gain all around.

Mr si99

one more question how much power can u make with a b16a2, 1 if you boost it? 2 if you run all motor? 3 street legal daily driven... and if it can well go over 240 whp can u please explain on how i can achieve it.

mathusala

240 hp, no problem - just make it pump-out about 160 lb-ft at 10000 rpms.

Mr si99

how could i do that without adding turbo?

mathusala

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr si99 &raquo;</TD></TR><TR><TD CLASS="quote">how could i do that without adding turbo?</TD></TR></TABLE>
Are you rich?

GapxGuy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr si99 &raquo;</TD></TR><TR><TD CLASS="quote">how could i do that without adding turbo?</TD></TR></TABLE>

86mm GSR, 13:1 CR, stage 3 cams, 440cc injectors, ITB, and everything else...

Turbo with 8 psi on stock sleeves would get you to 240hp.

blacktegmd

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chowmien &raquo;</TD></TR><TR><TD CLASS="quote">Damn with a $3-5k budget you can slap on a nice turbo setup and be faster than you wanted to be.</TD></TR></TABLE>


like he said ^^^^ TURBO !!!!!!!! just buy a turbo kit and a 3mm brass head gasket, you be straight.. your not a die hard racer..

EM1SiR

TURBO the B16A if you want POWER...

rmcdaniels

First, Fix your car. Skunk2 cam gears work fine with stock cams, that's what I use on my B16A2 in my '99 Si. If you keep them set at 0 degrees, then they work exactly like stock gears. Even if you adjust them, they will not cause the belt to be loose, but leave them at 0 unless you are on a dyno with somebody who knows what they are doing adjusting cam gears. You probably have a problem with your tensioner or your belt if the belt is loose. That can cause your car to run like crap, mess with your idle, cause you to lose compression from bent valves, etc. You need to fix this right away, if it gets loose enough it can jump a tooth or three and your valves will meet your pistons, resulting in bent valves or worse. It could be as simple as a tensioner adjustment. If you upgrade the bottom end it may not fix your other problems, so fix what you've got first. I'd also suggest compression and leakdown tests to figure out what kind of shape your engine is in.

Second, you may want to stop listening to your friend about your B16. I'm sure he means well, but it looks like he's 0 for 2 (cam gears and RPM's) on his B16 knowledge, and that could get real expensive later. It would really suck to spend a few grand fixing up your engine and have the engine sieze five seconds after you fire it up with your new mods because you did one little thing wrong in the build. I've seen that happen, and it costs a few grand more at that point to get it right again.

Third, your friend was right about a B20 VTEC having the potential to make more power than a B16, but that's a lot to go through if you have a healthy B16 already running in the car that you can mod. It is far easier and cheaper to make more power with your B16 than it is to properly build and install a B20 VTEC in your car. My B16A2 (the original motor that came in my '99 Si, somewhat modified over the years) makes 408 WHP and it's my daily driver.

I believe that the cheapest and safest route to more power is going to be through a well-managed turbo setup. For a stock B16A2, you can build a setup that will give your engine all it can handle for under $2000. You don't need a $5000 high-end turbo system to make good reliable power. You'll also find as you make more power that you will want to upgrade other things, like your suspension, engine mounts, clutch, differential, wheels/tires, and other components that will let you actually use the power, so don't blow all your money making a monster engine if you're just going to do wheel-hopping one-wheel burnouts with it.

Suggested action items for you going forward:

1. Figure out what's wrong with your engine, then get it fixed if it's fixable

2. buy and read "Maximum Boost", it will give you some idea of what you will need to make some good cheap power. I got my copy at Barnes and Noble, it's also available at Amazon.com .

3. Assemble a cheap custom turbo setup, plenty of info on that if you search. Don't skimp on engine management, you will pay for it later if you do. Do as much work as you can on your own, but don't hesitate to get professional help if you are out of your depth, tuning may be better handled by a professional.

4. Run the hell out of it, drag race it, autox it, road course it, have a good time. I don't know about you, but I'm always modifying mine, it's never quite good enough, so I don't think a month goes by that I'm not changing something on the engine, suspension, brakes, etc, just to make it more fun.

Mr si99

thanks rmcdaniels, you actually help answer 90% of my question the other 10% is a question that I need to ask myself. thanks for the information you help me out a lot on deciding what to do with my b16.

Mr si99

can u give me the specification of the mod you did to ur si to get it up over 400 whp...

rmcdaniels

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr si99 &raquo;</TD></TR><TR><TD CLASS="quote">can u give me the specification of the mod you did to ur si to get it up over 400 whp...
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Darton Sleeves, open deck, 84mm
Wiseco pistons, 8.4:1
Eagle rods
RLZ Stage II head -w- Ferrea valves/springs, stock cams
AEBS intake mani
Edelbrock 65mm throttle body
2.25" homemade Jegs intercooler piping
cheapo $200 ebay intercooler (charge air at 20 PSI is +11 degrees of ambient)
Lovefab SST A/C manifold -w- 3" downpipe to 3" TR turbo exhaust
Garrett GT3071R making 20 PSI
AEM EMS -w- AEM CDI and COP, JDogg tuned
bunch of other little things, but that's most of it.