B20b vtec conversion

[tripleuse]

Thank you for all your responses. I shouldve maybe clarified from the start that i will be needing the car to last, i will be doing over 40000 kilometres per year and the last thing i want is unecesary fixes that i will have to do. Either i build a b20b vtec or get a b18c, either way you look at it, i want something to last

Regards

b20 man by the time u spend money on the b18c u can build a decent b20. plus more torque and more power. and b20s have been proven to be reliable.

[IV73CI]

b20 man by the time u spend money on the b18c u can build a decent b20. plus more torque and more power. and b20s have been proven to be reliable.

tru that.

wot u got done to ur b20 to get that power?

Bottom End Build:
CNC Machined and balanced crank
Eagle Rods
11.3.1 CR

Top End Build:
ITR head
Supertech valves, springs, retainers
ARP Bolts
ITR IM matched ported
Stage 2 Rocket Mx Cams H/L profiles
S90 TB 70mm
440cc Injectors
Works Fuel Rail
Breather kit
Walbro fuel pump

Gearing
ITR LSD GB
Exedy Lightened F/Wheel
Exedy Stage 2 clutch


Zorst
Tri-Y Big Fat tubes 2.5inch collector
2.5inch Mandrel Bend B-Pipe
High Flow CAT
Twin loop Muffler

ECU
S300 tuned on E85 V1 V2 (final tune to be done)

thats about it just waiting on a V2 final tune as ive installed new parts and need to make use of its potential.

[manonastick]

Building a b20 vtec isnt that hard right??
I heard the b20 block needs to be reinforced is that true?.
Hear too much people saying bolting the head and new pistons plus a good tune can make a reliable b20 vtec.
If i can build one running at 110atw ill be happy if alli need is head + pistons + b20 block.

[blabla]

Building a b20 vtec isnt that hard right??
I heard the b20 block needs to be reinforced is that true?.
Hear too much people saying bolting the head and new pistons plus a good tune can make a reliable b20 vtec.
If i can build one running at 110atw ill be happy if alli need is head + pistons + b20 block.

stock bottom end will give 110-120 atw as per some builds on this forum.

[exquisit]

who tuned it?

tru that.



Bottom End Build:
CNC Machined and balanced crank
Eagle Rods
11.3.1 CR

Top End Build:
ITR head
Supertech valves, springs, retainers
ARP Bolts
ITR IM matched ported
Stage 2 Rocket Mx Cams H/L profiles
S90 TB 70mm
440cc Injectors
Works Fuel Rail
Breather kit
Walbro fuel pump

Gearing
ITR LSD GB
Exedy Lightened F/Wheel
Exedy Stage 2 clutch


Zorst
Tri-Y Big Fat tubes 2.5inch collector
2.5inch Mandrel Bend B-Pipe
High Flow CAT
Twin loop Muffler

ECU
S300 tuned on E85 V1 V2 (final tune to be done)

thats about it just waiting on a V2 final tune as ive installed new parts and need to make use of its potential.

[stndrd]

BYP tuned

[IV73CI]

BYP tuned

^^^ thats right FTW!

[IV73CI]

Building a b20 vtec isnt that hard right??
I heard the b20 block needs to be reinforced is that true?.
Hear too much people saying bolting the head and new pistons plus a good tune can make a reliable b20 vtec.
If i can build one running at 110atw ill be happy if alli need is head + pistons + b20 block.

correct.

you need to rebuild the bottom block to ensure it hand handle the VTEC power and extra pressure.

keeping in mind that the B20 never was built for vtec, so therefore you will need to ensure you have a breather kit, and the oil pressure return to the VTEC head otherwise VTEC will not engage.

[TODA AU]

^^^ thats right FTW!

You know that motor in the previuos EG, it made just over 160kw (Tuned by DD)
But since the original cam pulleys were removed & the cam timing was never re-set by Dave,
I guess that would account for some of the power loss.

[Mr.Brightside]

You know that motor in the previuos EG, it made just over 160kw (Tuned by DD)
But since the original cam pulleys were removed & the cam timing was never re-set by Dave,
I guess that would account for some of the power loss.

It also had ITB's, straight through and bigger exhaust, no aircon and no P/S

OP, have you considered going k series? Thats another option and will be in your budget if your looking to build a B20.

[IV73CI]

You know that motor in the previuos EG, it made just over 160kw (Tuned by DD)
But since the original cam pulleys were removed & the cam timing was never re-set by Dave,
I guess that would account for some of the power loss.

thats right Adrian .. do u recall what cam pulleys it had? coz right now it still has adjustable cam pulleys ..but the cam timing was detuned by previous owner.

my final V2 tune would involve cam timing, s300 touch up, fuel delivery, 70mm tb matched ported IM.

It also had ITB's, straight through and bigger exhaust, no aircon and no P/S

OP, have you considered going k series? Thats another option and will be in your budget if your looking to build a B20.

correct.. the ITB's made the extra power .. dunno bout the exhaust size ...as mines got 2.5inch now ..

i initially wanted to Kswap ..but it was way over the budget ... 10k+ kswap ...might as well buy another car.. lol

[ALLMTR996]

tru that.



Bottom End Build:
CNC Machined and balanced crank
Eagle Rods
11.3.1 CR

Top End Build:
ITR head
Supertech valves, springs, retainers
ARP Bolts
ITR IM matched ported
Stage 2 Rocket Mx Cams H/L profiles
S90 TB 70mm
440cc Injectors
Works Fuel Rail
Breather kit
Walbro fuel pump

Gearing
ITR LSD GB
Exedy Lightened F/Wheel
Exedy Stage 2 clutch


Zorst
Tri-Y Big Fat tubes 2.5inch collector
2.5inch Mandrel Bend B-Pipe
High Flow CAT
Twin loop Muffler

ECU
S300 tuned on E85 V1 V2 (final tune to be done)

thats about it just waiting on a V2 final tune as ive installed new parts and need to make use of its potential.

This engine has
NO CNC crank work where that came from I have no idea
Bearings are ACL Race Series
The conrods are SCAT
Pistons are RS Machine 84.5mm they have a 3.5cc dome based on USDM ITR pistons
Head studs are ARP
Cams are Rocket Motorsport M22x
Cam gears where Skunk2 Tuner series

CYL Head is a STD ITR
yes Supertech flat faced valves,Springs,Titanium Retainers
Combustion chambers where CNC machined to 81.5mm bore