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Blacktop Head on ST Bottom End
RallyReason - 4/4/13 at 09:57 AM

Was wondering if anyone has used a ST bottom end and a Blacktop head?

If so is it a straight forward swap? Or are there any modifications required? Or am I best to stay with the St complete engine with a VVT delete kit(hoping to continue to use my current mega jolt and carb setup)

monck - 4/4/13 at 10:29 AM

I too was going to do this as i had a blacktop head with piper 285's and i did find someone that had done it and they said it was a fair bit to do to make it possible so i went down the delete route on the st170 engine .

Ryan

rhinopower - 4/4/13 at 10:30 AM

quote:
Originally posted by monck
I too was going to do this as i had a blacktop head with piper 285's and i did find someone that had done it and they said it was a fair bit to do to make it possible so i went down the delete route on the st170 engine .

Ryan


Totally wrong, the heads are completely interchangeable, its silvertop and blacktops that cant be interchanged easily.

Not Anumber - 4/4/13 at 11:09 AM

why does the ST170 engine need the vvt removed. Is it for space saving or compatibility ?

silky16v - 4/4/13 at 02:44 PM

quote:
Originally posted by Not Anumber
why does the ST170 engine need the vvt removed. Is it for space saving or compatibility ?


Because it very expensive to setup (ECU & Mapping) with an aftermarket ECU to have the VCT working correctly you need a ecu that can do PWM and Camshaft postion to map properly to get the best from the VCT

DTA 60 is the cheapest i've found at around £1000 for ecu & loom then there mapping so another £300+ more like £500

some users on here (including myself) have fitted a VCT delete kit and a Zetec pulley on the inlet and then statically set the cam timing i have personally set mine at 110deg and once it was mapped i'm very happy with the results

[Edited on 4/4/13 by silky16v]

RallyReason - 6/4/13 at 05:11 PM

quote:
Originally posted by monck
I too was going to do this as i had a blacktop head with piper 285's and i did find someone that had done it and they said it was a fair bit to do to make it possible so i went down the delete route on the st170 engine .

Ryan


Did you ever try and fit the Blacktop head?

What are your results with the ST170 and delete kit?

Are you running carbs or throttle bodies?

silky16v - 6/4/13 at 05:13 PM

Look at my thread for ST170 results with VCT delete kit

RallyReason - 6/4/13 at 06:34 PM

Been reading a mix of information.

I believe i have 2 options:
- Fit a ST170 engine with the delete kit (using my current carbs and megajolt)
- Can i not use standard Zetec pulleys(hole drilled out) instead of verniers?



- Fit ST170 engine, throttle bodies and a Emerald ECU (which i am told will control the VVT? Expensive option)