0 registered members (),
161
guests, and 3
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums69
Topics113,822
Posts1,342,983
Members1,645
|
Most Online731 Jan 14th, 2020
|
|
|
20v turbo engine building
#1667399
11/09/2023 20:41
11/09/2023 20:41
|
Joined: May 2022
Posts: 7 Finland
sto27
OP
Newbie
|
OP
Newbie
Joined: May 2022
Posts: 7
Finland
|
Hey all,
I'm in the process of building my coupe's 20v turbo engine and wanted to ask if anybody has any tips or things to remember when putting it all back together, even the most basic and obvious stuff. Anything would be much appreciated as I am quite new to engine building and there are so many things to remember as is.
Forged pistons and rods are on the way, I also have a custom tubular exhaust manifold with a 44mm Tial external wastegate and 3 inch Downpipe coming. The manifold will be built to fit a Garrett GTX3076R Gen II turbo with v-band connection, which is also on the way.
I will try to use a megasquirt MS3X as the ECU with a custom wiring harness. I am planning on ordering bosch 1000cc EV14 injectors and still have to get an uprated fuel pump as well. I have also ordered colombo & bariani camshafts and am looking to increase the rpm limiter to 8000. This begs the question, does anyone know what the limits of the stock valve springs are? At what rpm would one start to experience valve float? I've read that some have gone as far as 8250 or more. I'd love to hear any thoughts on this.
Also, if there are any other internals to renew at this stage I would appreciate any suggestions. Obviously I already have new connecting rod bearings, main crankshaft bearings and new cylinder head bolts. I will also be getting a new water pump, new tensioners & belts etc. This reminds me, has anyone gotten their hands on a kevlar or otherwise strengthened timing belt for the 20v turbo? I've tried contacting multiple gates racing timing belt suppliers but have had no luck.
I also already have a front mounted Intercooler and an uprated radiator, however I am concerned about the stock oil cooler. Are there any upgrades for the stock one or has it been efficient enough for others who have taken the coupe out on track?
I will be sending everything to the machine shop for porting, cleaning, balancing etc. probably next month assuming all the necessary parts have arrived by then.
Again, any and all advice is appreciated, thanks.
|
|
|
Re: 20v turbo engine building
[Re: sto27]
#1667411
12/09/2023 15:41
12/09/2023 15:41
|
Joined: Dec 2005
Posts: 1,033 Drakelow
Jamiepm
Club member 1989
|
Club member 1989
Enjoying the ride
Joined: Dec 2005
Posts: 1,033
Drakelow
|
Hi, Suggest you contact Joe @FCSS for advice in general, but I would look to purchase a new oil pump, albeit the price seems to vary a lot.
My comment would be to pay attention to the manifold, most of the aftermarket offerings have been/ are crap and worse than the OE upto 500 hp
Regarding rev limit, it seems that 8k is a safe threshold, and you may struggle to simply source OE alternatives.
Cheers Jamie
She's alive!
|
|
|
|